state level science, mathematics and...

11Pp590 79( f< , j 5T; Lr j h; f7%5:. xf. 5r , 70 4 ; 5Z7j . 5 4 zn' 5Z:h fn' 55f:Zn9' 5 Z 20 13-14

STATE LEVEL SCIENCE, MATHEMATICS AND ENVIRONMENT EXHIBITION

FOR CHILDREN–2014–15and

42ND JAWAHARLAL NEHRU NATIONAL SCIENCE, MATHEMATICS AND

ENVIRONMENT EXHIBITION FOR CHILDREN–2015

G U I D E L I N E SFOR THE PREPARATION OF EXHIBITS AND MODELS, AND

Organising Exhibitions

State Level Science, Mat hem at ics and Environment Exhibi t ion for Ch ildren Guidel ines -SLSMEE-2014-15

2 State Level Science, Mat hem at ics and Environment Exhibi t ion for Ch ildren Guidel ines -SLSMEE-2014-15

CONTENTS

1. GUIDELINES FOR THE PREPARATION OF EXHIBITS AND MODELS 3

2. GUIDELINES FOR ORGANISING ONE-DAY SEMINAR 8

3. GUIDELINES FOR ORGANISING STATE LEVEL SCIENCE,MATHEMATICS 9AND ENVIRONMENT EXHIBITION FOR CHILDREN–2014-15• CALL FOR ENTRIES 9

• SCREENING, EVALUATION AND MONITORING OF ENTRIES 10FOR SLSMEE

• EXPENDITURE NORMS 11

• MAINTENANCE OF ACCOUNTS 12

• REPORT OF SLSMEE TO BE SENT TO NCERT 12

• CRITERIA FOR EVALUATION OF EXHIBITS FOR JNNSMEE 14

4. PROFORMAS 15

• INFORMATION ABOUT THE EXHIBIT/ MODEL 15

• PANEL OF JUDGES AREA-WISE 17

• INFORMATION ABOUT PARTICIPATING SCHOOLS 18

• INFORMATION ABOUT NATURE AND NUMBER OF EXHIBITS D ISPLAYED 19

• MAINTENANCE OF ACCOUNTS 20

• JUDGES: PROFORMA FOR EVALUATION OF PARTICIPATING ENTRIES- AREA WISE 21

5. EXAMPLES OF WRITE-UPS OF EXHIBITS 22(A) TWO-IN-ONE HONEY SQUEEZING MACHINE 22(B) VEHICULAR EXHAUST FILTER 24

3State Level Science, Mat hem at ics and Environment Exhibi t ion for Ch ildren Guidel ines -SLSMEE-2014-15

1 GUIDELINES FOR THE PREPARATION OF EXHIBITS AND MODELS

All children are naturally motivated to learnand are capable of learning.The knowledgeacquired by them is the outcome of their ownactivity. Children learn through interaction withnature,people and environment around.Theyconstruct knowledge by connecting new ideas totheir existing ideas. In order to stimulate creativity, inventivenessand the attitude for innovation in science andmathematics, National Curriculum Framework(NCF-2005) emphasizes on activ ities,experiments, technological modules,etc. It alsoencourages implementation of various activitiesthrough a massive expansion of channels suchas organisation of science, mathematics andenvironment exhibition at the national level forschool students, with feeder exhibitions at school/block/tehsil/district/region/state levels. The National Council of Educational Researchand Training (NCERT), New Delhi organisesJawaharlal Nehru National Science,Mathematicsand Environment Exhibition (JNNSMEE) forChildren every year for popularising science,mathematics and environmental educationamongst children, teachers and public in general.This exhibition is a culmination of variousexhibitions organised in the previous year by theStates, UTs and other organisations at district,zonal, regional and finally at the state level.Selected entries from all States and UnionTerritories, the Kendriya Vidyalaya Sangathan, theNavodaya Vidyalaya Samiti, Department of AtomicEnergy Central Schools, Central Board ofSecondary Education aff i l iated Public(independent) Schools and DemonstrationMultipurpose Schools of Regional Institutes ofEducation participate in this national levelexhibition. Like in the past several years suchexhibitions are to be organised from district to statelevel during 2014 - 15 too. These would form thefirst phase of preparation for the JNNSMEE to beorganised in November 2015.

The objectives of the exhibitions are:• to provide a forum for children to pursue

their natural curiosity, creativity, innovationand inventiveness;

• to make children feel that science andmathematics are all around us and we cangain knowledge as well as solve manyproblems by relating the learning processto the physical and social environment;

• to lay emphasis on the development ofscience and mathematics as a majorinstrument for achieving goals of self-rel iance, socio-economic and socio-ecological development of the nation and theworld;

• to analyse how science and mathematicshave developed and are affected by manydiverse individuals, cultures, societies andenvironment;

• to appreciate the role of science andmathematics in meeting the challenges of lifesuch as climate change, opening newavenues in the areas of agriculture, fertiliser,food processing, biotechnology, green en-ergy, disaster management, informationand communication technology, astronomy,transport, games and sports etc.

• to create awareness about environmentalissues and concerns and inspire children todevise innovative ideas towards theirprevention and mitigation.

Children are naturally inquisitive and innovatein response to a variety of problems facing thesociety.The rapidly aspiring human community forwant of more comfort has put tremendouspressure on the limited resources of the worldleading to unsustainable exploitation which mayresult in threatening the very existance of humanlife. Science and Mathematics act as powerfultools for investigating and understanding theworld. They also play a crucial role in solvingproblems confronting the society.To recognise andencourage these powerful tools so that theproblems confronting the society can be overcomethrough science and mathematics led solutionsfor a sustainable World, the theme for the StateLevel Science,Mathematics and EnvironmentExhibition (SLSMEE) for Children – 2014-15 has


been chosen as Science and Mathematics fora Sustainable World.

It is envisaged that children and teacherswould try to analyse all aspects of the role ofscience and mathematics for a sustainableworld.This will enable students and teachers togenerate scientific and mathematical ideas foraddressing various problems of the society.Scientific and mathematical ideas in this contextmay be referred to as innovative ways of doingthings or development of new values throughsolutions that meet new requirements leading tosustainable production and uses.

Children must be aware about how humansociety's unsustainable use of natural resourcesaffects the quality of life and environment.Childrenand teachers should identify where and how newresearches and developments in science,mathematics and technology can bring sustainabledevelopment of society.

The theme for SLSMEE-2014-15 andJNNSMEE-2015, Science and Mathematics fora Sustainable World aims to cover areas suchas-

1. Community Health and Environment;2. Landmarks in Science and

Mathematics;3. Information and Communication

Technology;4. Energy-Resources and Conservation;5. Transport;6. Waste Management.

(Areas listed above are suggestive.Students are free to choose any other areaand develop exhibits involving Science andMathematics for a Sustainable World)

A few exemplar ideas pertaining to the areaslisted in the context of the theme for thedevelopment of exhibits are given below.

THEME: SCIENCE AND MATHEMATICS FOR

A SUSTAINABLE WORLD.

1. Community Health and Environment

The main objectives of this area are: tobring awareness among the children about health

and factors affecting our health; to explore newscientific ,technological and bio-medical inventionsin prevention and cure; to analyse the role of selfand society in keeping our environment healthyin order to maintain good health and promote in-novative ideas for better management.

The exhibits/models in this area may pertainto:

• various levels of good health and ill health;• factors affecting the health and resulting

ailments in the body;• infectious and non-infectious diseases,

relationship with causative factors and theirsources;

• innovative control measures at differentlevels/roles of various agencies;

• presenting medical assistance and facilitiesof rural/urban and gender aspects;

• ways to raise awareness and sensitisepeople to be careful in health matters,explore the possibilities and make use ofthe facilities available;

• development of knowledge-base andunderstand new scientific, technological aidsin bio-medical area;

• presentation of known facts and researchfindings in different medical systems like Indian,Modern, Homeopathy, Ayurvedic etc.;

• lifestyle and its relationship with good andbad health based on known facts andresearches;

• demonstration of the role of traditionalknowledge of herbal products for communityhealth; etc.

• improved methods of sanitation andappropriate technology for waste disposal,both biodegradable and non-biodegradable;

• common prophylactic measures availableand advantages of inoculation andvaccination;

• need for appropriate measures for familyplanning and welfare;

• ideas for developing low-cost nutritious food;• occupational hazards to health and

innovative techniques to overcome them;


• general awareness about community medicine;

• new medical diagnostic and therapeutic tools;• improvised aids for visually impaired,hearing

impaired, physically challenged persons,etc;• need to curb menace of alcohol

consumption, smoking ,drug abuse etc.• genetic studies;

• developing simple technologies fordiagnostics and environmental problemsmonitoring; etc.

2. Landmarks in Science and Mathematics

The main aim of this area is to make ourschool childrens and teachers aware of the mile-stones in science and mathematics that havecontibuted for a sustainable world.The exhibits/models in this area may pertain to:

• developing innovative experiment or designof models/exhibits on the landmarkdiscovery and invention in science andmathematics;

• significant contributions to the advancementof science and technology;

• policies, programmes and schemes inscience and mathematics that have asignificant impact on human life;

• scientific and mathematical applications,that have a wide ranging impact on issuessuch as agriculture,energy,health,environment , space ,industry,communication, education etc;

• effective and efficient ways of communicating an experiment that revolutionise scien-tific and mathematical ideas;

• cost effective demonstration of known factsand research in science and mathematics;

• impact of scientific and mathematical ideason other subject areas such as medicine,psychology, social science etc;

• contribution of science and mathematics foreconomic growth,mass literacy, eradicationof poverty and malnutrition; etc.

3. Information and CommunicationTechnologyThe main objectives of this area are: to pro-

mote innovations in knowledge networks involv-ing information and communication technology inall segments of the society; to promote childrento think,reason and communicate to solve prob-lems; to understand effective use of informationand communication technology for a variety ofpurposes.

The exhibits and models in this area may per-tain to:

• developing innovative designs/models ofmultimedia equipments/materials andpackages for children with special needs,especially visual and audio impairment;

• exploring uses/applications of informationand communication technology in generatingemployment/eradicating illiteracy;

• technologies of emerging web designs;• projects against attack aimed on information

services/cyber security/cyber war;• effective and efficient ways of communicat-

ing scientific and mathematical ideas and con-cepts;

• technologies in forecasting and warning ofcyclones, floods and storms;

• better information and public address sys-tems in the event of disaster to prevent chaosand confusion;

• improvised/improved devices for effectivecommunication between various emergencyservices-medical, police, military and otheragencies/ bodies/committees;

• use of satellites in providing information per-taining to meteorology, communication, re-mote sensing, etc;

• applications in education using computer asan educational tool; simulations in science,mathematics, etc;

• other emerging areas in information and com-munication technology.

4. Energy- Resources and Conservation

This area is expected to make children think ofvarious ways and means for making efficient useof available energy resources and also new


techniques/methods of using and conservingenergy from both conventional and non-conventional sources. The exhibits/models in thisarea may pertain to:

• various ways of harnessing geothermalenergy such as energy from hot springs/geothermal desalinisation/geothermalheating – controlling heating and cooling ofa building using underground heat by vertical/horizontal loops/geothermal power/electricitygenerated from naturally occurringgeological heat sources;

• design of green building/environmentbuilding which harvest energy, water andmaterials;

• green roof technologies/roof mounted solartechnologies such as solar water heater,solar lighting system;

• innovative designs of domestic hydroelectricgenerator;

• methods of heat retention in materials/heatcontrol in the design of house;

• solar cooker/solar distiller/solar dryer for foodprocessing/solar heated houses;

• studies of variation in sunshine intensity at agiven place for developing indigenousmethod of its usage etc;

• projects for measuring availability of solar/wind energy in a given area;

• wind mill/water mill for grinding grains/drawingwater from the well and to generate electricity;

• water sensitive urban design to mitigate watershortage;

• water crisis management;• use of tidal waves/ocean currents/salinity

gradient for generating electricity;• energy from biomass such as seaweeds,

human/animal wastes, keeping in v iewenvironmental concerns;

• improvised technologies for effective usageof bio-fuels;

• innovative designs of bio gas/bio mass plant;• low cost liquid fuel (bio-ethanol, bio-methanol

from cellulose biomass by improvisingconversion techniques);

• bio energy for poverty alleviation;

• impact of bio-energy on food security;• designs of fuel-eff icient automobiles/

machines;• innovative designs of internal combustion

engine which can function on various biofuels;

• production of electrical energy frommechanical energy/chemical/biological/nuclear resources;

• mechanism of extraction, storage andprocessing of fossil fuels;

• effects of landscaping and architecture onenergy consumption etc.

5. Transport

The main objective of this area is to makegeneral public and children in particular awareabout the issues and concerns of the presenttranportation system and to promote innovationsfor an efficient transport system.The exhibits/models in this area may pertain to:

• improvised/indigenous technique for efficienttransport in rural/urban areas;

• fuel eff icient/pollution-free designs ofautomobiles/other vehicles;

• use of innovative/inexpensive/locallyavailable materials/designs for construction/maintenance of roads/railway tracks;

• innovative ideas for efficient management ofroad, rail, water and air transport systems;

• preparedness for disaster management-bothnatural and man-made ;

• GPRS and satellites enabled vehicularmovement and transportation;

• design and functioning of modern devices oftransportation;

• designs for making existing operation oftransportation more efficient;

• exploring uses/applications of transport ingenerating employment/eradicating illiteracy;

• improvised/improved devices for effectivetransport between various emergencyservices, namely medical, police, military andother administrative bodies/committees;


6. Waste Managemant

The main aim of this area is to make our schoolchildren and teachers realise the need formanaging the unsustainable disposal system ofwaste material generated from industry and do-mestic household and also new technique/meth-ods for waste disposal.The exhibits/models inthis area may pertain to;

• various ways of waste disposal such aslandfill, incineration etc;

• cost effective and environmental friendlywaste management;

• various ways/methods/techniques ofrecycling waste materials;

• various ways/methods/techniques ofextractiong usefull resources from wastematerials;

• low cost waste management system;• improvised/improved devices for effective

and effiecient waste management system;• issues involved in nuclear,

biological,medical and chemical wastemanagement;

• Issues related to management of marinepollution,ocean dumping, eutrophication,marine debris, thermal pollution,algalboom,micro-plastic etc

• implication of nanotechnology (nano-toxiology and nano-pollution);

• improvised and innovative techniques /methods of harnessing energy from wastematerial.

• technique of separating/extracting harmfulbiological/chemical/nuclear waste and theirstorage;

• technique and processes for reducing wastegeneration;

• effecient and effective methodes/techniqueof waste handling and transportation;

Note:- The exempler points listed so far areto trigger ideas and give directions for pre-paring exhibits and are not exhaustive. Fur-ther we would once again reiterate that, stu-dents and teachers are free to choose anyarea, even areas not listed in this guidelines.However the chosen area and the exhibits/models developed should be in the contextof the theme: Science and Mathematics fora Sustainable World. Examples of write-upsof exhibits from the previous JNNSMEE arealso given at the end of this booklet for fa-cilitating the preparation of exhibits andmodels for students and teachers.


The importance of Indigenous Technologyhas been realised since ancient time.In day to dayhuman endeavours,indigenous technology en-compasses all spheres of activities,right from ag-riculture to transport and from simple tools to so-phisticated machines.Indigenous technology holdsthe key to a nation's development objectives.It isalso seen as the driver for inclusive growth for acountry.

Government of India has declared thedecade 2010-2020 as the Decade of Innovationswith a Focus on Indigenous Technology forachieving Inclusive growth.Having realised this,Science,Technology and Innovation Policy-2013of the Department of Science and Technology,Government of India emphasises the importanceof indigenous technology for the country's tech-nological competence and self reliance.Indigenoustechnology in this context need not necessarilybe on the technological invention through highinput R&D but on indigenous innovation and othersimple tools and processes that create new val-ues for the development and participation of thelower pyramid of the population.The diversity ofthe country has served as a breeding ground forindigenous innovation for the country.

We intend to create awareness amongteachers, teacher educators, researchers andstudents about looking for indigenous innovationin all possible situations that can bring inclusivegrowth of the nation.The general public and com-munity may be motivated to appreciate andrecognise the role played by indigenoues tech-nology for the development and progress of thenation.

Activities to be performed during this Seminarshould be planned to (i) increase the public ap-preciation and understanding of IndigenousTechnology;(ii) motivate people to think about us-ing indigenous technology for solving challengingproblems surrounding them; (iii) encourage outof the box thinking and lateral thinking among the

2 GUIDELINES FOR ORGANISING ONE-DAY SEMINAR

T op i c : I n d i gen ou s T ec h n o l ogy f o r I n c l u si v e Gr ow t hNOTE: The One-Day Seminar should preferably be organised one day before the organisation of State

Level Science ,Mathematics and Environment Exhibition (SLSMEE) for Children.

children; (iv) make people aware of the role ofindigenous technology in achieving inclusivegrowth ; and (v) make people aware about theneed for collaborative arrangement among hold-ers of indigenous knowledge .

As a part of this endeavour, to reach out tothe public through children and teachers,a oneday seminar may be organised in the SLSMEEfor children.During this One-Day Seminar on 'In-digenous Technology for Inclusive Growth',children, teachers, parents and all concernedmay be invited to generate ideas. The activitiesin this seminar may include:• Making people aware of contributions of In-

digenous technology in the development ofthe nation;

• Publicising the usefulness of indigenoustechnology in the development process forachieving inclusive growth;

• Organising poster exhibition-cum-competi-tions highlighting usefulness of indigenoustechnology especially for inclusive growthand in solving the problems of the society;

• Organising invited talks by experts in Indig-enous Technology, particularly motivating theaudience to look for its role in creating inclu-sive growth

• Making students find solution to specific prob-lems existing in their immediate environment.

• Arranging a Quiz competition in which ques-tions may be based on the Indigenous inno-vation and technology;

• Arranging a group discussion among differ-ent groups ,to create awareness about theusefulness of Indigenous Technology in dif-ferent spheres of life.


3 GUIDELINES FOR ORGANISING STATE LEVEL SCIENCE,MATHEMATICS AND ENVIRONMENT

EXHIBITION FOR CHILDREN – 2014-2015

A. CALL FOR ENTRIES

1. The theme for SLSMEE-2014-15 for Childrenand for the 42nd Jawaharlal Nehru NationalScience, Mathematics and Environment Exhibition(JNNMEE– 2015) for children would be 'Scienceand Mathematics for a Sustainable World'pertaining to the areas such as -

1 Community Health and Environment;2 Landmarks in Science and Mathematics;3 Information and Communication Technology;4 Energy; Resources and Conservation;5 Transport;6 Waste Management;

(Areas listed above are suggestive.Students are free to choose any other areasand develop exhibit involving 'Science andMathematics for a Sustainable World'.)

In order to facilitate the preparation of exhibits andmodels for display in district to state level exhibitionsduring 2014-2015, Guidelines for the Preparationof Exhibits and Models are being communicated.2. Wide publicity should be given for inviting

entries. SLSMEE-2014-15 Guidelines for thePreparation of Exhibits and Models should beprovided to all schools. These guidelines may alsobe translated in local languages and be givenwide publicity. This may also be given on thewebsite(s) of the respective states/union territoriesand other participating organisations. It is alsoenvisaged that guidelines be printed in locallanguage(s), Hindi and English in the form of abooklet for their dissemination among all theschools for generating ideas and for developingexhibits and models.These guidelines can alsobe downloaded from NCERT website(www.ncert.nic.in).

3. Children from all schools [including

government, government-aided, public andprivate, catholic, mission, armed-forces (Army,Air Force, Navy, Sainik, BSF, ITBP, Assam-Rifles,CRPF, Police etc.), DAV management, MaharshiVidya Mandir, Saraswati Vidya Mandir, CentralTibetan Schools, Navyug, Municipality, BhartiyaVidya Bhavan, Science Clubs etc.] are eligibleto participate in State Level Exhibitions.Preference may be given to students in seniorclasses (i.e.secondary and higher secondarystages).

Note: For State/UT Coordinator:

Following organisations conduct their ownexhibitions separately:

• Kendriya Vidyalaya Sangathan;• Navodaya Vidyalaya Samiti;• Department of Atomic Energy Central

Schools;• CBSE affiliated Public Schools (independ-

ent schools); and• Demonstration Multipurpose Schools of

Regional Institutes of Education.These organisations send their selected

entries for consideration for participation inJawaharlal Nehru National Science, Mathematicsand Environment Exhibition (JNNSMEE) forChildren to NCERT directly. Therefore, it mayplease be ensured that entries belonging tothese organisations are not forwarded toNCERT by States/UTs.

4. Public Sector Undertakings, Industries, andother Non-government Organisations (NGOs)working in the areas (where these exhibitions areorganised) may also be invited to participate asthe exhibits displayed by them would be ofinstructional value for children and teachers.


B.SCREENING, EVALUATION AND MONITORING OF

ENTRIES FOR SLSMEE

1. In case Districts/Regional Level Exhibitionsare not being organised by the State/UT,aScreening Committee should be set up to finalisethe selection of entries from various institutionsfor participation in the State Level Science,Mathematics and Environment Exhibition(SLSMEE) for Children.

2. The Screening Committee may consist ofrepresentatives of SISE/SIE/SCERT and someselected representative institution(s). All recordsabout the meeting of the committee should bemaintained. The selection procedure adoptedshould lay more emphasis on the quality of theexhibits rather than quantity. It should be en-sured that the exhibits are not crude andhazardous and have good f inish and arepresentable.

3. The above mentioned Screening Committeeor a separate panel of judges should evaluatethe exhibits according to the criteria of evaluationas mentioned for SLSMEE. Best three exhibitsin each area should be selected; preferablydeveloped by secondary and higher secondarystudents; by the said panel of judges.However,an outstanding exhibit developed by upperprimary students and members of science clubsmay also be considered if the said panel of judgesfeel so.

4. A list of the selected entries of the exhibits andmodels under each area (to be displayed in thestate level exhibition) must be prepared. Thismust contain the name of the exhibit/model,names of the student(s) and guiding teacher(s),name of the school and a brief information aboutthe exhibit (may be in two sentences only).

Such a list may be prepared in accord-ance with the NCERT's un-priced publication "List

of Exhibits", displayed in the National Exhibition. Itis published every year and distributed to allparticipating children, teachers, and visitors duringthe exhibition. A copy of this may be obtained fromthe NCERT, New Delhi.This list may also bedistributed among all participating children andteachers. A copy of this list should be forwardedto NCERT together with the formal report of theexhibition.

Criteria for Evaluation of Exhibits in SLSMEE.In order to keep a uniform criteria for evaluating

the exhibits in all States/UTs and on the basis ofthe feedback received from different agencies, thefollowing criteria for judging the exhibits is suggested(the percentages given in bracket are suggestiveweightagess):

1. Involvement of children’s own creativity andimagination (20 percent);

2. Originality and scientific and mathematicalinnovations in the exhibit/model (15 percent);

3. Scientific thought/ principle/ approach (15 percent);

4. Technical skill, workmanship and craftsman-ship (15 percent);

5. Utility for Society, scalability (15 percent);6. Economic (low cost), portability, durability, etc.

(10 percent); and7. Presentation - aspects like demonstration,

explanation and display (10 percent). [(i) 5% extra weightage may be given to ex-

hibits from rural/backward regions. (ii) 3% extra weightage may be given to ex-

hibits from semi urban regions.]

On the basis of the criteria suggested aboveand also as mentioned in proforma VI,three entries from each area developed bystudents of classes IX-XII may be selected andforwarded to NCERT for consideration forparticipation in JNNSMEE-2015. Howeveroutstanding exhibits developed by upper primary


students and members of science clubs mayalso be considered provided the total entries fromeach area does not exceed three.In addition to this, two best exhibitsdeveloped by disabled students from any ofthe areas may also be forwarded to NCERT.It must be kept in mind that entries submitteduder this category should be displayed onlyby the disabled students. Further the entriesforwarded should be accompanied withdisability certificate from a competentauthority. Disability norms followed by thegovernment of India will be consideredunder this category.

Judges are also requested to judge whetherthe model is traditional or an improvement overthe traditional model or it is innovation asper proforma IV.Various skills involved inconstructing the exhibit and model, the degreeof neatness and craftsmanship may also betaken into account. Every effort must be madeto rule out the tendency of procuring the readymade exhibits/models.General layout of theexhibit, relevance, clarity of charts accompanyingthe exhibit and overall attractiveness to themasses and children should also be assessed.Working models should be encouraged.

C. EXPENDITURE NORMS

The ‘Grant-in-Aid’ provided by NCERT to respec-tive states/UTs is a catalytic grant for organisingState Level Exhibitions and one day Seminar .States and UTs are expected to spend theadditional expenditure, if any, from the state funds.The funds given to the States/UTs are to be utilisedexclusively for meeting the travel and boardingcosts of participating students and their teachersand experts. It is suggested that the following

norms of payment may be followed:

1. For Organising One-Day Seminar(i) The seminar should be organised one day

before the organisation of SLSMEE orduring the days of exhibition in morning/evening hours.

(ii) Honorarium to four (two outstation andtwo local) experts/scientists may bedisbursed at the rate of Rs 1500.00 each.Note : The expert/scientist should bepreferably from a research institute/labo-ratory/ university/SCERT/SIE.

(iii) Travelling allowance to two outstationexperts/scientists from a maximum distanceof 500 km may be disbursed as per thestate/central government rules.

(iv) Daily allowance and incidental charges totwo outstation experts/scientists for amaximum of three days may be disbursedas per state/central government rules.

(v) Conveyance charges to two local experts/scientists may be disbursed as per state/central government rules.

(vi) Contingency grant for tea/coffee with lightsnacks: typing/photocopying/cost oftransparencies/pens/CDs etc: Rs.3,000.00/-.

2. For Organising the SLSMEE(i) Honorarium to four (local) judges may be

disbursed at the rate of Rs. 1500.00 each.NCERT faculty members should not beprovided any Honorarium from thishead, if invited as a judge in the exhi-bition.

(ii) Only one student and one teacher maybe permitted to participate with eachexhibit.Even if more than one exhibit isselected from a single school, only oneteacher from that school may be allowed


to participate.(iii) Travelling allowance: actual second class

sleeper rail/bus (non-AC) fare.(iv) Incidental charges maximum upto Rs.

100.00 for to and fro journey may beprovided for the journey by rail or busprovided the journey time is more than 6hours. For journeys less than 6 hours noincidental charges should be paid.

(v) Boarding expenses: Rs.80.00 per headper day for each participant for a maxi-mum of 4 days. In case the boarding fa-cilities are not provided by the organisers,a sum of Rs.120.00 per person may beprovided as daily allowance (DA).

(vi) Local conveyance charges may be dis-bursed as per state/central governmentrules.

(vii) contingency grant for typing/ photocopy-ing etc. Rs. 3,000.00/-

D. MAINTENANCE OF ACCOUNTS

It is necessary to maintain a separateaccount for the expenditure of the grants-in-aidprovided by the NCERT and the same should beforwarded to the NCERT, along with all relevantvouchers and receipts, in original WITHIN ONEMONTH OF THE CONCLUSION OF THEEXHIBITION for adjustment in the NCERTaccount.Proforma V is given for convenience. Allvouchers may be signed by the Coordinator/In-charge of the exhibition. All those vouchers/re-ceipts that are in regional language shouldaccompany a translated copy in English certifiedby the Coordinator/In-charge of the State LevelExhibition to facilitate audit and settlement ofaccounts. All payments exceeding Rs 5000.00/- should be supported by payee’s receipt witha revenue stamp.

It may please be ensured that each Voucher/Receipt against the expenditure is duly verifiedfor the amount and then passed for payment.The specimen of this certificate is indicated belowfor convenience:

Verified and passed for payment of Rs.....................................(Rupees ...................................only.

Signature of the Co-ordinator/Incharge.State Level Science, Mathematics and EnvironemtExhibition (SLSMEE) for Children - 2014-15

Seal

Note: Only those Vouchers/Receiptsagainst such items of expenditure, whichare covered under the expenditure norms,may please be sent to this department foradjustment/settlement of accounts.

E. REPORTS OF SLSMEE TO BE SENT TO NCERT

A formal report of the State Level Science,Mathematics and Environment Exhibition andOne-Day Seminar should reach NCERT withinone month after the conclusion of the exhibition.It should include the following:

i. Dates and venue of exhibition.

ii. Proformas I - V duly filled up.

iii.List of schools participating and the number ofstudents/teachers participating as per theproforma attached. Break-up of the male andfemale participants should also be given. Itshould also reflect on the number of rural andurban schools that participated in the exhibition.

iv.List of entries of the exhibits and models beingdisplayed in the state level exhibition. Number


The Report and

Proformas I-Vshould strictly follow the above format and be forwarded

within one monthafter the conclusion of the exhibition to :

R.R.KoirengCoordinator

State Level Science,Mathematics and EnvironmentExhibition (SLSMEE) for Children - 2014-15

Department of Education in Science and MathematicsNational Council of Educational Research and Training

Sri Aurobindo Marg, New Delhi 110 016

Phone: 011-26962030; Fax: 011-26561742

e-mail: [email protected]: www.ncert.nic.in

of exhibits displayed under each area shouldalso be mentioned separately.

v. Highlights of the exhibition including otheractivities such as lectures, film shows, bookexhibition etc. and participation of other scientific/industrial organisations.

vi.Panel of judges for evaluating the exhibits/models displayed in the exhibition (in accordancewith the Criteria for Evaluation of Exhibits).

vii.List of selected exhibits being sent forconsideration for participation in 42nd JNNSMEE- 2015 bearing the name of student, teacher,school, complete write-up of exhibits, 5 minutesvideo presentation in CD about the exhibit bythe student etc.

(A proforma for information about the exhibit/model is also attached for this purpose -Proforma I).

viii. Number of visitors to the exhibition.


F.CRITERIA FOR EVALUATION OF EXHIBITS FOR

JAWAHARLAL NEHRU NATIONAL SCIENCE ,MATHEMATICS AND ENVIRONMENT EXHIBITION

(JNNSMEE) FOR CHILDREN.

Selected entries from all State Level Science,Mathematics and Environment Exhibition(SLSMEE) for Children organised in differentstates, union terr itories and otherorganisations are forwarded to NCERT forconsideration for participation in JawaharlalNehru National Science, Mathematics and Environment Exhibition (JNNSMEE) forChildren.JNNSMEE is organised every year byNCERT in a state/union territory on rotation basisusually during a period which falls around thebirth anniversary of Pandit Jawaharlal Nehru, thatis 14th November (Children's Day).Theseentries are forwarded to NCERT as perProforma I (given in this booklet). At NCERT,these entries ares screened and short-listed onthe basis of their write-ups and a 5 minutes video

presentation in CD by the student. For thispurpose the following criteria for evaluatingexhibits is adopted (the percentagesgiven in bracket are weightages).NCERT reservesthe right to alter the criteria to include adequatenumber of exhibits from rural/backward regionsand exhibits developed by disabled students.

1. Originality and innovations in the exhibit/model (25 percent);

2. Scientific thought/ principle/ approach (20 percent);

3. Utility for Society,Scalability ; (20 percent)4. Economic (low cost), portability, durability,

etc. (15 percent); and5. Presentation of write-up: (20 percent).


42ND JAWAHARLAL NEHRU NATIONAL SCIENCE, MATHEMATICS AND ENVIRONMENT EXHIBITION (JNNSMEE - 2015) FORCHILDREN

Theme : SCIENCE AND MATHEMATICS FOR A SUSTAINABLE WORLD

Proforma I

INFORMATION ABOUT THE EXHIBIT/MODEL

1. TITLE OF THE EXHIBIT/MODEL _____________________________________________(IN BLOCK LETTERS) _________________________________________

2. Area: (i) Community Health and Environment;Tick only one and (ii) Landmarks in Science and Mathematics;strike out all others) (iii) Information and Communication Technology;

(iv) Energy- Resources and Conservation;(v) Transport;(vi) Waste Management;(vii) Others (Please specify area) ...................

3. NAME(S) OF CONTRIBUTING STUDENT(S) ___________________________ (M/F); Class _____(IN BLOCK LETTERS) ___________________________ (M/F); Class _____

___________________________ (M/F); Class ________________________________ (M/F); Class _____

4. NAME(S) OF GUIDING TEACHER(S) _______________________________________ (M/F)(IN BLOCK LETTERS) _______________________________________ (M/F)

5. NAME OF SCHOOL WITH COMPLETE POSTAL ADDRESS (IN BLOCK LETTERS) :

.................................................................................................................................................

.....................................................................State/UT....................... ............Pin ...........................Phone: .................................................; Email .................................... ....................................

6. Type of school* Government/Local Body/Private Aided/Private Unaided/Any other (Please Specify) _____________________ _________________

7. Affiliation of the School State Board/ICSE/CBSEAny other (Please Specify) ________________

8. Location of the School Tribal/Rural/Backward/Semi Urban/Urban

9. Nature of the Exhibit/Model (A) Innovative/Improvised Apparatus(B) Working/Static Model/Study ReportAny Other (Please Specify) ________________

10. Whether Dark Room Space is needed for the display of Exhibit: Yes/No 11. Approximate space required for the display of Exhibit....................................................................* G. Government: A Government School is that which is run by the State Government or Central Government or Public Sector

Undertaking or an Autonomous Organisation completely financed by the Government;LB. Local Body: A Local Body School is that which is run by Panchayati Raj and Local Body Institutions such as Zila Parishad,

Municipal Corporation, Municipal Committee or Cantonment Board;PA. Private Aided: A Private Aided School is that which is run by an individual or a private organisation and receives grants

from the Government or Local Body;PU. Private Unaided: Private Unaided School is that which is managed by an individual or a private organisation and does not

receive any grant from the Government or Local Body.

4 PROFORMAS


12. Source of inspiration/help for preparing the exhibit/model:(Please explain briefly about the nature and form of help received from the following):

(i) From Teachers/School__________________________________________________________________________________________________________________________________________________

(ii) From Parents________________________________________________________________________________________________________________________________________________________________

(iii) From Peer Group________________________________________________________________________________________________________________________________________________________________

(iv) Any other________________________________________________________________________________________________________________________________________________________________

13. Brief Summary (Please explain the purpose (or aim) and the scientific principle involved in the exhibit/modelin not more than three lines).______________________________________________________________________________________

______________________________________________________________________________________

14. Write-up of the Exhibit/Model (not more than 1,000 words) in the following format.[Note: Proper submission of the write-up will ensure that if selected for participation in the 42nd JawaharlalNehru National Science,Mathematics and Environment Exhibition (JNNSMEE-2015) for Children – 2015,it will be considered for publication in the booklet entitled: Structure and Working of Models. Forconvenience, examples of write-ups of exhibits are also given in this booklet.]

I. Introduction(i) Purpose (or Rationale) behind the development or construction of the exhibit; and(ii) The scientific principle involved.

II. Description(i) Materials used for the construction;(ii) Construction and working of the exhibit/model; and(iii) Applications, if any.

III. References Books, journals or magazines referred for preparation of the exhibit/model.

IV. Illustrations(i) Black and white line and labelled diagram of the model, illustrating the working of the exhibit/model.(ii) Close-up photographs of the exhibit/model.

15. Five minutes video presentation in CD by the student about the exhibit containing (i) title of theexhibit (ii) area of the exhibit (iii) working of the exhibit (iv) scientific principle involved in it (v)application etc. should also be sent along with the write-up.

Note: (i) Please do not pin or paste the photographs of the exhibits. Enclose them in a separate envelope.Description of the photograph may be written on its back.

(ii) Please do not enclose the photographs of participating student(s) and their guide teacher(s)

(Signatures of all students and teachers)


*R

esp

ecti

ve j

ud

ges

may

hav

e th

eir

opin

ion

s, s

ugg

esti

ons

and

com

men

ts a

bo

ut

the

orga

nis

atio

n o

f sc

ien

ce,

ma

them

atic

s a

nd

en

viro

nm

ent

exh

ibit

ion

. N

CE

RT

wel

com

es a

ll s

uch

op

inio

ns.

Kin

dly

en

clos

e th

em o

n s

epa

rate

sh

eets

.

(Ple

ase

tic

k m

ark

on t

he

are

a b

ein

gev

alu

ate

d)

Sl.

No.

1.

2.

3.

4.

Na

me(

s) o

f th

e J

ud

ge(s

)D

esig

na

tio

nO

ffic

ial

Ad

dre

ss,

Ph

on

eF

ax,

e-m

ail

Res

iden

tia

l A

dd

ress

Ph

one,

Mob

ile

Sta

te/

UT

___

____

____

Du

rati

on _

____

____

__

STAT

E LE

VEL S

CIE

NC

E, M

ATH

EMAT

ICS

AND E

NVI

RO

NM

ENT E

XHIB

ITIO

N FO

R C

HIL

DR

EN -

2014

-201

5Pr

ofor

ma

II

PAN

EL O

F JU

DG

ES - A

REA

WIS

E*

VEN

UE

......

......

......

......

......

......

THEM

E : S

CIE

NC

E AN

D M

ATH

EMAT

ICS

FOR

A S

UST

AIN

ABLE

WO

RLD

PER

TAIN

ING

TO

TH

E AR

EAS O

F

(i) C

omm

unity

Hea

lth a

nd E

nviro

nmen

t; (ii

) Lan

dmar

ks in

Sci

ence

and

Mat

hem

atic

s;

(iii)

Info

rmat

ion

and

Com

mun

icat

ion

Tech

nolo

gy; (

iv)E

nerg

y- R

esou

rces

and

Con

serv

atio

n;

(v) T

rans

port;

(vi)

Was

te M

anag

eman

t.

(vii)

Any

oth

er a

rea(

plea

se s

peci

fy)..

......

......

......

......

......

......

......

......

Are

as:


* G. Govern m en t : A Govern men t School is that which is r un by t he State Govern men t or Cent ral Gover nment orPu blic Sect or Under t ak ing or an Aut onomou s Organisat ion completely f inanced by t he Govern men t ;

LB. Local Body : A Local Body School is th at which is run by Panch ayat i Raj an d Local Body Inst it u t ions su ch asZi la Par ish ad, Mu nicipal Corporat ion , Municipal Commit tee or Can ton men t Boar d;

PA. Pr i vat e Ai ded : A Pr ivate Aided Sch ool is t hat which is ru n by an individual or a pr ivate or ganisat ion andreceives gr ant s from th e Gover nment or Local Body;

PU. Pr i vat e Unai ded : A Pr ivate Un aided Sch ool is th at which is man aged by an individual or a pr ivat e organisat ionan d does not r eceive an y gran t fr om the Gover nment or Local Body.

Pr o f o r m a I I I

I NF OR M A T I ON A B OUT PA R T I C I PA T I NG SCH OOL S

State/Union Territory: ________________________________

Dates of Exhibition: ________________________________

Venue of Exhibition: ________________________________

Type ofSchool*

Tr ibal (T)/Ru ral (R)/Urban (U)

No. ofSchools

Num ber ofExh ibit s/

Models

Part icipants from the School

Male Female Total Boys Gir ls Total SC/ ST

G

LB

PA

PU

Tot al

T

R

UT

R

U

T

R

U

T

R

U

Teachers Stu dents

STATE LEVEL SCIENCE, MATHEMATICS AND ENVIRONMENT EXHIBITION FOR CHILDREN - 2014-2015


ST

AT

E L

EV

EL S

CIE

NC

E,

MA

TH

EM

AT

ICS A

ND E

NV

IRO

NM

EN

T E

XH

IBIT

ION F

OR C

HIL

DR

EN -

20

14

-20

15

Pro

form

a IV

INF

OR

MA

TIO

N A

BO

UT N

AT

UR

E A

ND N

UM

BE

R O

F E

XH

IBIT

S D

ISP

LA

YE

D

TH

EM

E:

SC

IEN

CE A

ND

MA

TH

EM

AT

ICS F

OR

A S

US

TA

INA

BL

E W

OR

LD

Sta

te/

Un

ion

Ter

rito

ry: _

____

____

____

____

____

____

____

___

Da

tes

of E

xhib

itio

n:

_

____

____

____

____

____

____

____

___

Are

asIn

no

vati

ve/

Imp

rovi

sed

Ap

par

atu

s/W

ork

ing

Mod

elNa

ture

an

d N

um

ber

of

Ex

hib

its

Dis

pla

yed

Sta

tic

Mod

elS

tud

y/S

urv

ey R

epor

tA

ny

oth

er(p

leas

e sp

ecif

y)T

ota

l N

o. o

f E

xh

ibit

s

Co

mm

un

ity

Hea

lth

and

En

viro

nm

ent

Tra

nsp

ort

An

y ot

her

are

a.

(Ple

ase

spec

ify)

Lan

dm

ark

s in

Sci

ence

and

Mat

hem

atic

s

En

ergy

- R

esou

rces

and

Con

serv

atio

n

Info

rmat

ion

an

dco

mm

un

icat

ion

Tee

chn

olog

y

Wa

ste

Man

agem

ent.


STATE LEVEL SCIENCE,MATHEMATICS AND ENVIRONMENT EXHIBITION FOR CHILDREN - 2014-2015

Proform a V

MAINTENANCE OF ACCOUNTS

State/ Union Terr itory: ________________________________

Dates of Exhibit ion : ________________________________

Cert ified that the expendi tu res have been m ade in accordance with the norm s and Guidelines asgiven by the NCERT for organising the State Level Science and Environment Exhibit ion for Chi ldren.It is also cert i fied that no other voucher is included.

Signature of the In -Charge (Cont roll ing Officer)

Receipt Expenditu re Signature ofCoordinatingVoucher

Date of Part icu lars

Draft No.

Amount Voucher Date of Particulars(Head-

Amount

Otherincom e, if

Tot al

Balance Refundedto NCERT, if any,

Tot al

Date


(i) C

omm

unity

Hea

lth a

nd E

nviro

nmen

t (ii)

Lan

dmar

ks in

Sci

ence

and

Mat

hem

atic

s;

(iii

) Inf

orm

atio

n an

d C

omm

unic

atio

n Te

chno

logy

; (iv

) Ene

rgy:

Res

ourc

es a

nd C

onse

rvat

ion;

(v) T

rans

port;

(vi)

Was

te M

anag

emen

t(v

i) A

ny o

ther

are

a( p

leas

e sp

ecify

).....

......

......

......

..

Are

as;

(Ple

as

e

tic

k

ma

rko

n

the

a

rea

be

ing

e

va

lua

ted

)

Stat

e/U

T___

____

____

Dur

atio

n___

____

____

STAT

E LE

VEL

SCIE

NC

E,M

ATH

EMAT

ICS

AND

EN

VIR

ON

MEN

T E

XHIB

ITIO

N F

OR

CH

ILD

REN

- 20

14-2

015

Pro

form

a

VI

THEM

E: S

CIE

NCE A

ND M

ATHI

MAT

ICS F

OR A

SUS

TAIN

ABL

E WO

RLD

VEN

UE:

....

......

......

......

......

......

......

......

JUD

GES

’ PR

OFO

RM

A FO

R EV

ALU

ATIO

N O

F PA

RTI

CIP

ATIN

G E

NTR

IES–

AR

EA W

ISE

Sl.

No

.C

od

e of

the

Ex

hib

it

Invo

lvem

ento

fC

hil

dre

n’s

Ow

nC

rea

tivi

tyan

dIm

agi

nat

ion

20

%

Ori

gin

alit

y/In

nov

atio

ns

inth

e E

xh

ibit

/M

odel

15

%

Sci

enti

fic

Th

ough

t/P

rin

cip

le/

Ap

pro

ach

15

%

Tec

hn

ical

Sk

ills

/W

ork

man

ship

/C

raft

sman

ship

15

%

Uti

lity

for

soci

ety,

Sca

lab

ilit

y

1

5 %

Eco

no

mic

(low

cos

t)/

Por

tab

ility

/D

ura

bil

ity

10

%

Pre

sen

tati

on

10

%

To

tal

10

0 %

1.

2.

3.

4.

5.

6.

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

...

Dat

e: _

____

____

____

___

Sig

na

ture

...

....

....

....

...

Nam

e :

Des

ign

ati

on a

nd

Aff

ilia

tio

n:

No

te:

5%

an

d 3

% e

xtr

a w

eig

hta

ge m

ay b

e gi

ven

to

ex

hib

its

be

lon

gin

g t

o r

ura

l/b

ack

wa

rd

and

sem

i u

rba

n r

egi

on

s re

spec

tiv

ely

.


EXAMPLES OF WRITE-UPS OF THE EXHIBITS DISPLAYED IN EARLIER EXHIBITION ARE GIVEN BELOW

TO FACILITATE STUDENTS TO DEVELOP THE WRITE-UP OF THEIR EXHIBIT.

(A) TWO-IN-ONE HONEY SQUEEZING MACHINE

STUDENT Sacred Heart School,Sonia Thounaojam Porompat , Manipur

TEACHER

Angom Geetarani

INTRODUCTIONHoney is an edible natural fluid. It is a rich source of energy containing many vital nutraints. ThoughManipur has nearly 10,000 bee-keepers but the honey is not appropriatly produced.

In Manipur, honey is extracted from honey comb by squeezing or by rotating manually. This typeof method could not extract all the honey from the honey comb. Instead it loses muscular power,contains impurities and is also a time consuming work. So, it is necessary to make a machine whichcan extract large quantity of honey that contains no impurities.Such type of machine is envisaged inthis model. The present model is an attempt to solve the problems of using excessive muscularpower while extracting honey.

SCIENTIFIC PRINCIPLE INVOLVED

The following scientific principle is involved(i) When a crank, connected to a sprocket wheel by a chain, is made to rotate, the linear speed ‘v’

is the same for both wheels.

Therefore, v = WR = wr, where R and r are radii of the crank and the sprocket respectively.

Hence, wRWr

, ‘v’ is the speed and W and w are their angular speeds.

Since, R >> r, w >> W.

Therefore, for one rotation of the crank, there will be a number of rotations (depending upon

Rr ) of the sprocket wheel.

(ii) Principle of experiencing a centrifugal force when an object is made to rotate in a direction awayfrom the centre of the circular path.

Cr an kWh eel

Spr ocket Wh eel

5 EXAMPLES OF WRITE-UPS OF EXHIBITS


MATERIALS REQUIRED

Wood, Stainless steel, Honey comb, Chain, Sprocket wheel, Paddle, Handle, Pot etc.

CONSTRUCTION AND WORKING

Construction(a) 1 honey comb keeping container.(b) 3 Sprocket wheels, different in size.(c) 1 iron rod in the middle of comb container to attach the comb.(d) 1 crank and 1 honey collector.WorkingWhen the paddle connected to the crank is rotated by hand or by the foot of a person sitting on thesaddle, the sprocket wheel whose radius is 5 times (say) smaller than the crank rotates 5 times faster.The honey comb frames, connected/attached to the axle of the sprocket wheel also rotates. Becauseof the centrifugal force experienced due to rotational motion, the honey get separated from the honeycombs due to striking of the the curve surface of the hollow cylindrical drum whose axis is kept coincidingwith axis of rotation. The honey is collected in a vessel placed below the drum through the holesprovided. The other sprocket wheel close to the 1st one, allows the honey comb to rotate in theopposite direction. By rotating the crank in that direction, honey will come out from the other side ofthe honey comb also. This helps in extraction of honey more efficiently.

ADVANTAGES OF THE MODEL

(i) Physical exercise of the man by paddling the crank in both direction. (clockwise and anti-clockwise)(ii) Effective use of muscular energy in doing physical exercise.(iii) More production of honey from honey comb.(iv) Saving time both in doing physical exercise and extraction of honey.

APPLICATION

It is used to extract honey. Besides this, machine has even the provision for generating power (electricity)if a generator (d.c.) is connected to the rear rotating system and can be used as a source of light forworking in dark.


(B) VEHICULAR EXHAUST FILTER

STUDENTS Demonstration School,Vaibhav Dhama RIE, AjmerSaransh Mathur Rajasthan

TEACHER

Amarendra Tripathy

INTRODUCTION

We know that many vehicles are increasing air pollution which increases global warming or thetemperature of the earth. Many steps have been taken to reduce the emission level of gases comingout from the vehicle exhaust. We can see in heavy traffic areas the level of air pollution is very high.We feel uncomfortable and even feel itching in our eyes in such areas. Increasing air pollution is adanger sign for all living organisms on earth. Exhaust gases coming out from all types of automobilescontains mainly carbon mono-oxide, carbon dioxide, nitrogen dioxide, hydrocarbons, sulphur dioxideand other harmful gases. These gases are very harmful for our environment and ecological system.This project is an attempt to solve the problem of high pollution level in cities due to automobiles inheavy traffic areas. This project helps us to reduce the air pollution caused by the vehicles.

SCIENTIFIC PRINCIPLE INVOLVED

In the cooling chamber two aluminium plates which have charge on them attract dust particles. Theexhaust gases pushed by the exhaust fan on the nets made of synthetic fibers and solution of sodiumhydroxide (NaOH) is sprayed by the sprayer. NaOH reacts with the harmful exhaust gases and neutralizesthem. This way, the level of polluted air is very low.

MATERIALS REQUIRED

Bottles of two litre capacity, T-shape water pipe joint, two exhaust fans, aluminium foil, NaOH solution,sprayer, battery, etc.

CONSTRUCTION AND WORKING

In this project the exhaust gases are collected in the cooling chamber (the shape of the cooling chamberis like a frustum) where due to the expansion of gases their temperature becomes low. In the coolingchamber there are two aluminium plates which create charge on them and attract the acidic/basic dustor harmful particles and then an exhaust fan sucks the gases and pushes the gases in NaOH treatmentchamber. We can identify it in given figure (1) where the NaOH reacts with harmful gases and makethem neutral. There is a machine called sprayer placed after the exhaust fan which sprays NaOH onthe nets of synthetic fibers after every 2 km distance period when the vehicle is running.


Fig.1In the vertical chamber the remaining dust particles are separated by exhaust fan which pushes

the gases on a filter so the heavy solid harmful particles settle down. Then the remaining gases areagain treated with NaOH. We can identify it in figure (2). Finally, cool and fresh air with very low airpollution comes out and spread out in the environment.

Fig.2Removal of harmful particles/chemicals: Take out the nets of synthetic fibers and wash them in

NaOH solution to remove solid sediments and harmful chemicals periodically.

RESULT

It ensures lowering of the pollution level in air due to automobiles. So we can save our earth frompollution.

Gas Neutralizer

Sprayer Exhaust Fan Metal Plates

Exhaust Fan

Gas Neutralizer

Heavy Du st Part icles

state level science, mathematics and...

Documents