VISHWA BHARATI PUBLIC SCHOOL NOIDACLASS XI

HOLIDAY HOMEWORK (2017-18)SUBJECT: ENGLISH

1. Read the novel The Canterville Ghost thoroughly and attempt the following questions in your literature registers-

1.1 The ghost is more human like than a spirit. Comment in about 120 words.1.2 How does Virginia help the ghost of Sir Simon in his journey to his salvation?1.3 Describe in detail the funeral ceremony of the Cantervile ghost.1.4 how did the ghost plan to seek revenge upon the Otis family?1.5 What was the history behind the stain on the library floor? What was the reaction of the

Otis family to it?1.6 Give a brief character sketch of Mr. Otis.1.7 The ghost was haunted by the Otis family. Discuss.1.8 What was the old prophecy about and how did it come true?1.9 What happened soon after the Otis family arrived in the Canterville Chase?1.10 Why did Mr Otis not want to keep the box of jewels? What was lord Canterville’s

argument?

SUBJECT : CHEMISTRYNumerical Based assignment

Q1. If Law of constant composition is true, what weights of calcium , carbon and oxygen are present in 1.5g of calcium carbonate? Given that the sample of calcium carbonate fromanother sample contains Ca= 40%, C= 12% and O= 48%.

Q2. Carbon and hydrogen combine to form three compounds A, B and C. The percentage of hydrogen in these compounds are : 25, 14.3 and 7.7 respectively. Show that the data illustrates the Law of multiple proportion.

Q3. Which has the maximum and minimum mass? a) 25.6g of oxygen (at mass =16)b) 2.56 gram atom of sodium (atomic mass = 23)c) 0.256 gram molecule of water (moleculer mass= 18)d) 0.256 gram atom of iodine (at. mass = 127)

Q4. Calculate the number of atoms of hydrogen , oxygen and sulphur in 0.2 mole of sulphuricacid(H2SO4).

Q5. What weight of calcium contains the same number of atoms as are present in 3.2g ofsulphur.(at. mass of S= 32g)

Q6. An organic compound on analysis gave the following percentage composition : C = 57.8% ; H= 3.6% and the rest is oxygen. The molecular mass of the compound is 166. Find the molecular formula of the compound.

Q7. Calculate the weight of lime (CaO) obtained by heating 200kg of 95 % pure limestone (CaCO3).

Q8. Zinc and hydrochloric acid react according to the following reaction: Zn (s) + HCl(aq) ------------------- ZnCl2 (aq) + H2 (g) If 0.30 mol of Zn are added to hydrochloric acid containing 0.52 mol of HCl, how many moles of hydrogen are produced?

Q9. a) A sample of NaOH weighing 0.38g is dissolved in water and the solution is made to 50ml in a volumetric flask . what is the molarity of the resulting solution? b) How many moles of NaOH are contained in 27ml of 0.15M NaOH solution?

Q10. Molarity of H2SO4 is0.8M and its density is 1.06g/cm3. What will be the concentration ofthe solution in terms of molality and mole fraction?

SUBJECT : PHYSICS

PHYSICS ( KINEMATICS)

1. A stone is thrown vertically upwards with an initial velocity of 14 ms-1. Find the maximum height reached and the time of ascent. Given g = 9.8 ms-2.

2. A balloon is moving upwards with a speed of 5 ms-1. When it is at a height of 98m, a packet is dropped from it. What is the velocity of the packet when it strikes the ground?

3. A train is running at a constant acceleration. The two ends of the train pass a telegraph post with velocities v1 and v2. Find the velocity with which the middle point of the train passes the same post.

4. A man on a railway platform is just 9m behind the entrance door of a train, when the train begins to move with a uniform acceleration of 2 ms-2 starting from rest. The man immediately picks up uniform speed to get into the train and just manages to board it. Find the uniform speed of the man.

5. Two trains each of length 100m, moving in opposite directions along parallel lines, meet with speeds 60 kmh-1 and 30 kmh-1. If their accelerations are 0.3 ms-2 and 0.2 ms-2 respectively, find the time taken by them to pas each other.

6. The speed of a car increases at a constant rate α from 0 to v and then remains constant for an interval and then finally decreases to zero at a constant rate β. If S is the total distance described, show that the total time taken is t = S/v + v/2 (1/α + 1/β).

7. Drops of water from the roof of a house are falling at regular intervals of 1 second. Find the position of 3rd, 4th and 5th drop when the 6th drop just falls from the roof.

8. A body is dropped from the top of a tower. During the last second of its motion it travels 16/25th of the height of the tower. Calculate the height of the tower if g = 10 ms-2.

9. The displacement x of a particle moving in one dimension under the action of a constant force is related to time t by the expression t =√ (x+3) where x is in meters and time is in seconds. Find the displacement of the particle when the velocity is zero.

10. A particle moving in a straight line covers half the distance with a speed of 3 ms-1.The other half of the distance is covered in two equal intervals of time with speeds of 4.5 ms-1 and 7.5 ms-1 respectively. Find the average speed of the particle during this motion.

11. A stone falls freely from rest and the total distance covered by it in the last second of its motion equals the distance covered by it in the first 3s of its motion. Find how long the stone remains in air.

12. Find the ratio of the distances travelled by a freely falling body in the first, second and third second of its fall.

CONCEPTUAL QUESTIONS:

1. Two balls of different masses (one lighter and one heavier) are thrown vertically upwards with the same speed. Which one would pass through their point of projection in their downward direction with greater speed?

2. A man standing at the edge of a cliff throws a stone straight up with initial speed u and then throws another stone straight down with the same initial speed u and from the same position. Find the ratio of the speeds, the stones would attain, when they hit the base of the cliff.

3. An object is covering distance in direct proportion to t3, where t is the time elapsed.a) What is the conclusion you might draw about the acceleration? Is it constant,

increasing, decreasing, or zero?b) What may you conclude about the force acting on the object?

4. Plot the speed time graph of a car travelling with uniform speed of 80kmh-1. On the same graph, plot the speed time graph for a second car starting from rest and uniformly accelerating to a maximum speed of 80 kmh-1.a) What relationship do you find between the distances covered by the two cars during the

time in which the second car is accelerating?b) Would this relationship hold if you chose a different acceleration for the second car?

SUBJECT :BIOLOGY Very short Answer Questions1. Name a vestigial organ in the alimentary canal of man2. Give the term for the mucosal folds present inside the stomach.3. In which part of the alimentary canal there is no peristaltic movement?4. What are crypts of Lieberkuhn?5. How does saliva act in self-defence?6. Define deglution.7. Why are proteases generally released in inactive form?8. What are chylomicrons?9. Which chemical substance stimulates the release of pancreatic enzymes? 10. Give the terms for a semidigested gastric food and fully digested intestinal food.11. Differentiate between vital capacity and total lung capacity.12. Where is carbonic anhydrase located? What is its function?13. What are the inspiratory muscles which help in pulmonary ventilation of man?14. Give R.Q. value for a carbohydrate, protein and fat.15. Which epithelium lines the trachea and bronchi?Short Answer Questions

1. How would non-secretion of saliva affect digestion of food in our mouth?2.What is the biological significance of E.coli in the alimentary canal?

3.What are micelles? How are they helpful?4.It is absolutely not necessary to produce amylase in inactive form in our body but it is not so in case of trypsin. Give reasons.5.Caecum and vermiform appendix are long sized in herbivores while these are vestigial in man. Why? 6.Give the cause and symptoms of following digestive disorders:a) Dental caries b) Peptic ulcerss 7.Name the hormone that stimulates gall bladder to release the bile juice. How does this juice reach the duodenum? Explain the function of bile in the digestion of fats.8.Explain in brief morphology of human lungs.9. Write the role of diaphragm and intercostals muscles in breathing process.10.Give cause and symptoms of following respiratory disorders:(a) Asthma (b) Emphysema11.What do you mean by vital capacity, tidal volume and inspiratory reserve volume.12.Tabulate the respiratory organs and modes of respiration found in various groups of animals.13.What is the role of carbonic anhydrase? Where is it operative?14.Differentiate between right lung and left lung.15.Oxygen-dissociation curve is at higher level in the persons living at high altitudes than those living in the plants. Why?

MULTIPLE CHOICE QUESTIONS

1.A protein deficiency disease isa) Kwashiorkar b) Marasmus c) Pellagra d) Osteomalacia

2.Glisson’s capsule is found in which organ of mammals?a) Stomach b) Kidney c) Testis d) Liver

3.Osteomalacia occurs due to deficiency of a) Vitamin-A b) Vitamin-B c) Vitamin-D d) Vitamin-E

4.Which of the following vitamins are fat soluble?a) A B C K b) A B D E c) A D E K d) A D C K

5.Which one of the following is the correct matching of the site of action on the given substrate, the enzyme acting upon it and the end product? a) Small intestine : Proteins pepsin amino acidsb)Stomach : Fats lipase micelles c)Duodenum : Triglycerides trypsin monoglyceridesd)Small intestine : Starch amylase maltose

6.Hypoxia is the condition in which less energy becomes available to the tissues. This may be due toa) Lesser O2 in the atmosphere b)More CO in the air

c) Less RBCs in blood d) All of them

7. Oxygen dissociation curve isa) Parabolic b) Hyperbolic c) Sigmoid d)Straight

8. Pneumotoxic centre is present in a) Cerebrum b) Cerebellum c) Medulla d) Pons Varolii

9. Arrange the following in the order of increasing volume:1) Tidal volume 2) Residual volume 3) Expiratory reserve volume 4) Vital capacitya) 1<2<3<4 b) 1<3<2<4 c) 1<4<3<2 d) 1<4<2<3

10.The majority of carbon dioxide produced our body cells is transported to the lungs: a) Dissolved in blood b) As bicarbonates c) As carbonates d) Attached to haemoglobin

11. During hibernation the frog respires through:a) Gills b) Lungs c) Integument d) Tympanum

12.Continued consumption of a diet rich in butter, red meat and eggs for a long period may lead to:a) vitamin A toxicity b) kidney stones c) hypercholesterolemia d) urine laden with ketone bodies

SUBJECT : MATHS

SETS

Q1. Write the following as intervals:(a) {x : x∈R ,−4< x≤6¿¿(b) {x : x∈R ,−12<x≤−10¿¿(c) {x : x∈R ,0≤x<7¿¿(d) {x : x∈R , 3≤x≤4¿¿Q2. Write the following intervals in the set builder form:(a) (0, 8) (b) [-2, 9] (c) (3, 12]` (d) [2,7)Q3. Write the power set of the set {7, 10, 11}.

Q4. If A = {4, 5, 7, 8, 10}, B = {4, 5, 9} and C = {1, 4, 6, 9}, then verify thatQ5. (a) ( A∩B )∩C=A∩( B∩C )

(b) A∪( B∩C )=( A∪B )∩( A∪C )

(c) A∩( B∪C )=( A∩B )∪( A∩C )Q6. If A = {3, 5, 7, 9, 11}, B = {7, 9, 11, 13} C = {11, 13, 15} and D = {15, 17}; find:

Q7. (a) A¿ B (b) B¿ C (c) A¿ C¿ D (d) A¿ C(e) B¿ D (f) A¿ (B¿ C) (g) A¿ D (h) A¿ (B¿ D)(i) (A¿ B) ¿ (B ¿ C) (j) (A ¿ D) ¿ (B ¿ C)

Q8. If U = { a, b, c, d, e, f, g, h}, find the complement of the following sets:Q9. (a) A = {a, b, c} (b) B = {d, e, f, g} (c) {a, c, e, g}Q10. Let U = { 1, 2, 3, 4, 5, 6, 7, 8, 9 }, A = { 2, 4, 6, 8 }, B = { 2, 3, 5, 7 }

Q11. Verify that:(a) (A ¿ B)’ = A’ ¿ B’ (b) (A ¿ B)’ = A’ ¿ B’

Q12. In a survey of 400 movie viewers, 150 were listed as liking Veer Zara, 100 as liking Aitraaj

and 75 were listed as both liking Aitraaj as well as Veer Zara. Find how many people were liking

neither Aitraaj nor Veer Zara.

Q13. There are 60 students in a mathematics class and 90 students in a physics class. Find the

number of students which are either in physics class or in mathematics class in the following cases:

(a) Two classes meet at the same hour. (b) Two classes meet at different hour and

30 students are enrolled in both the courses.

Q14. Out of 1000 T.V. owners investigated 800 owned Sony and 400 owned Aiwa. 100 owned

both Sony and Aiwa. Is this data correct?

RELATIONS & FUNCTION

Q1. If

31,

35

32,1

3yx

, find the values of x and y.

Q2. If A = {a,b}, B = {2,3,5,6,7} and C = {5,6,7,8,9}, find CBA .

Q3. Let A = { 1,2 } and n(B) = 3. Find the total number of relations from A to B.

Q4. Determine the range of the relation R defined by 5,4,3,2,1,0:5,1 xxxR

Q5. Let A = {1,2,3……14}. Define a relation R from A to A by R = {(x,y): 3x – y = 0, where

x,yA} Write down its domain, co-domain and range.

Q6. Define modulus function. Draw its graph and write down its Domain and Range.

Q7. Find the domain and the range of the function:

29

1

xxf

Q8. Let A = {1,2,3}, B = {3,4} and C = {4,5,6}, find

(a) CBA (b) CABA

Q9. If f and g are two functions over real numbers defined as f(x) = 3x + 1, g(x) = x2 + 2, then

find (a) f + g (b) f – g

(c) fg (d) gf

(a) Find the domain of 23)( 2

xxxxf

(b) Find the range of 223)(

xxf

(c) A

= {1,2,3,5} and B ={4,6,9}. Define a relation R from A to B by R = {(x,y): the difference

P Q

5

6

7

3

4

5

between x and y is odd, x A, y B}. Write R in Roster form.

CARTESIAN PRODUCT OF SETS & RELATIONSQ-1 Find x and y if (a) (x + 2, 4) = (5, 2x + y) (b) (x + 3, y – 4) = (0, 5)Q-2 Let A = {2, 3, 4} and B = {5, 6}. Find A × B and B × A and show that A × B ≠ B × A.Q-3 If A = { a, b, p, d} , B = {p, d, e} and C = {p, e, f, g} then, verify the following identities:Q-4 (a) A × ( B∪C ) = ( A×B )∪( A×C )

(b) A×( B∩C )=( A×B )∩( A×C )

(c) A×( B−C )=( A×B )−( A×C )Q-5 The Cartesian product A×A has 9 elements among which are found (-1,0) and (0,1). Find the set A and the remaining elements of A×A.Q-6 Let A and B be two sets, such that n(A) = 3 and n(B) = 2. If (x,1),(y,2), (z,1) are in A × B, find A, B and A × B where

x, y, z are distinct elements.Q-7 Let A and B be two sets, such that A× B consists of 6 elements. If three elements of A×B are (1,4), (2,6), (3,6). Find A×B and B×A.Q-8 Let A = {a,b,c,d} and B = {x,y,z}. Which of the following are relations from A to B:

(a) {(a,y),(a,z),(c,x),(d,y)} (b) {(a,x),(b,y),(c,x),(a,d)}(c) {(a,x),(y,d),(x,c)} (d) {a,b,x,y,z}

(e) {(d,x),(c,z),(a,z)}Q-9 Determine the domain and range of the relation R, where:

(a) R ={(-3,1),(-1,1),(1,0),(3,0)}(b) R = {(x,y):x is a multiple of 3 and y is a multiple f 5}(c) R = {(x,x2): x is a prime number less than 15}

Q-10 The adjacent figure shows a relationship between the sets P and Q. Write this relation in (a) set builder form (b) roster form. What is its domain and range?

TRIGONOMETRY

Q1. The minute hand of a watch is 1.5cm long. How far does its tip move in 40minutes? (Use

π=3 .14

Q2. Prove that:tan13 θ−tan 9 θ−tan 4 θ=tan 13θ tan 9 θ tan 4 θ .

Q3. Find the values of sin180 .

Q4. Prove that: cos5 A=16 cos5 A−20 cos3 A+5 cos A .

Q5. If 0≤x≤2 π , find sin x

2,cos x

2and tan x

2,when

tan x=−4

3, x

lies in quadrant II.

Q6. Solve the following equations:

i) 2 tanA – cotA = -1.

Q7. ii). 2 sin2 x+√3 cos x+1=0

Q8. Prove that: sin(−420° )(cos390° )+cos(−660° )sin(330° )=0

Q9. Prove that:

cos8 A+cos5 A−cos 12 A cos9 Asin 8 A cos5 A+cos12 A sin 9 A

= tan 4 A.

Q10. Prove that cos20 ° cos40 ° cos60 ° cos80 °= 1

16 .

Q11. Prove that(cos α+cos β )2+ (sin α+sin β )2=4 cos2 ( α−β

2 )

Q12. Prove that: cos2 θ cos θ

2−cos3 θ cos 9θ

2=sin 5θ sin 5 θ

2.

Q13. Prove that:

√2+√2+√2+2 cos8 θ=2cosθQ14. Prove that:

sec 8θ−1sec 4θ−1

= tan 8θtan 2θ

Q15. Prove that: Cos2A + Cos2(A + 1200) + Cos2(A – 1200) =

32

Q16. Prove that:

(1+cos π8 )(1+cos 3 π

8 )(1+cos 5 π8 )(1+cos 7 π

8 )= 18

Q17. Prove that:

sin2 720−sin2 60 °= √5−18 .

Q18. Solve:cot2θ+ 3

sin θ+3=0

Q19. Solve: tan2θ+(1−√3 ) tanθ−√3=0

SUBJECT :PHYSICAL EDUCATION :

Draw a diagram of standard track with all specifications. Mention all the track and field events. Mention the latest records at Indian ,world and Olympic level .

Draw a diagram of the field /court of any one game of choice .Write its history rules and regulations ,terminologies ,sports personalities and important tournaments .

Games : Badminton, Judo, Swimming ,Table tennis ,Tackwondo and tennis

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SUBJECT: PSYCHOLOGY

Complete all the activity given.

SUBJECT : HISTORY

Project work to be completed as discussed in the class .Strictly follow the CBSE guidelines .

SUBJECT: MULTIMEDIA AND WEB DESIGNING.

TOPIC: COMPUTER SYSTEM

1. Give full forms of :i) CPU ii) CU iii) ALU iv) RAM v) ROM vi) VDU vii) BOSS viii)

DVD

2. What is a computer system? Draw a flow diagram to show its functional components or subsystems and flow of data.

3. What do you understand by CPU? Name its components and explain their functions.4. Give at least five examples each for input and output devices , out of which 3 can be

commonly used and 2 should be upcoming devices.5. What do you understand by the following terms:

a) Firmware b) Live ware c) Hardware d) Software

6. Name and explain two types of RAM.7. Write the types of ROM memory and explain briefly about them.8. Differentiate between:

a) RAM and ROM

b) Primary Memory & Secondary Memory.

c) ALU and CU

d) UNIX and LINUX

e) Compiler and Interpreter

f) Data and information

9. Give the byte equivalent for:i) 1 KB ii) 1 MB iii) 1 GB iv) 1 TB v) 1 PB

10. Name two storage devices that you've used?11. What is MICR? Where is it mostly used? What is the major advantage and disadvantage of

MICR?12. What is the difference between OCR and OMR?13. Differentiate between-

i) Magnetic storage and Optical storage

ii) CD , DVD and BD

iii) microprocessor and microcomputer

iv) serial and parallel port

14. Suggest suitable device or media for the following:a) High quality print b) A high quality drawing

c) To store movies d) Economical printing of small quantities of data

15. Name the standard input and output device? 16. What are biometric sensors? Give an example where these sensors are used.17. Name the unit used for measuring processor speed. Name any two families of

microprocessor currently in use.18. Name main PCB board inside our computer system? Name main components on it?19. What is system tray ? What are the various components of the system tray ?20. How many types of Plotters are available. Give one application level difference between

them.21. How is data read from and written on to CD-ROM?22. What is meant by microprocessor? Give the names of some popular microprocessors.23. Define cache. How do they improve performance of the system.24. Define operating system . Name any three mobile operating systems and explain them.25. What is application software ? Give three examples of each : Word Processing software,

Spread sheet, image editing software , Presentation software , Database applications , Video Editing software and sound editing software.

SUBJECT : BUSINESS STUDIES

Do the following case studies based onL-1Nature and Purpose of Business and L-2 Forms of Business Organizations.

Q 1 You belong to a middle class family. In order to increase your earning, you want to start a provision store which sells good quality products only. As per your judgement which form of organization is better for you and what values will it serve?

Q 2 Ayaan and Aryan entered into partnership business to promote the handicraft industry on global platform by launching an e- commerce website. To be on the safe side, they decide to register their firm. Explain to them the registration process and identify the value exhibited by them.

Q 3Kavya is a female member. Her grand father deals in the business of garments and her father is the member of the same. She is the only daughter of her parents. Is she eligible to enter her family business? Comment.

Q 4 Mohan Pvt.Ltd has commenced the business of Blue Pottery. Explain the auxiliaries required for the smooth functioning of their newly set enterprise.

Q 5 Rohan is running a petrol pump in its town. In context to it, what possible political causes he can face which may lead to risk in his business?

SUBJECT: ACCOUNTANCY

1. The proprietor is regarded as the creditor of the business to the extend of capital invested by him in the business. Name and explain the assumption.

2. When stock is valued at cost in one accounting period and at lower of net realizable value in another accounting period, two accounting principles are conflicting with each other. Name these principles and explain.

3. Name the following principles or assumptions.

i. The assumption, which states that a business enterprises will not be sold or liquidated in the future.

ii. Recognition of expenses in the same period as associated revenues.iii. Classification of assets as current and fixed assets.iv. Appending notes to the financial statements

4 An employee is dismissed from his job. Does this event represent a business transaction? Support you answer with the explanation of the appropriate assumption.

5 Write two differences between tangible assets and intangible assets.6 ‘ A distinction should be made between the business transaction and the personal

transactions of the proprietor.’ Explain the assumption behind this statement.

7. Mr Sunrise started a business for buying and selling of stationary with Rs 5,00,000 as an initial investment .Of which ,he paid Rs 1,00,00 for furniture Rs 2,00,000 for buying stationary items.He employed a sales person and clerk. At the end of the month he paid Rs 5,000 as their salaries. Out of the stationary bought ,he sold some stationary for Rs 1,50,000 for cash and some other stationary for Rs 1,00,000 on credit basis to Mr Ravi.

Subsequently ,he bought stationary items of Rs 1,50,000 from Mr.Peace. In the first week of next month ,there was a fire accident and he lost Rs 30,000 worth of stationary .A part of the furniture ,which cost Rs 40,000 was sold for Rs 45,000 .From the above answer the following:

i. What is the amount of capital with which Mr Sunrise started business?ii. What are the fixed assets he bought?

iii. What is the value of the goals purchased?iv. Who is the creditor and state the amount payable to him?v. What are the expenses?

vi. What is the gain he has earned?vii. What is the loss, he has incurred?

viii. Who is the debtor? What is the amount receivable from him?ix. What is total amount of expenses and loses incurred?

SUBJECT : ECONOMICS

Economics Project work (Project for application of statistics in economics):Preparation of a project report on….

Consumer awareness amongst households through collection of primary data by designing a questionnaire.

ORProductivity awareness amongst enterprises through use of statistical data from statistical tables from Newspapers/ Economic surveys/RBI bulletin/ government budget of the state/ the nation/ Census report etc.Essential steps:a) Designing a questionnaire: You are required to collect a data by designing a questionnaire.

b) Framing a sample: Having designed a questionnaire, you must define the sample size of your study best would be to take a sample of 20 households.

c) Collection of data: you should collect data through direct personal oral investigation.

d) Classification of data: you should properly classify your data.

e) Presentation and analysis of data: You should present the data as per your study and analyse the data in terms of percentages etc. so that interpretation of data becomes easy and meaningful.

f) Conclusion or interpretation: Prepare a statement of conclusions of your study.

Subject: Computer Science TOPIC: COMPUTER SYSTEM

1. Give full forms of :i) CPU ii) CU iii) ALU iv) RAM v) ROM vi) VDU vii) BOSS viii)

DVD

2. What is a computer system? Draw a flow diagram to show its functional components or subsystems and flow of data.

3. What do you understand by CPU? Name its components and explain their functions.4. Give at least five examples each for input and output devices , out of which 3 can be

commonly used and 2 should be upcoming devices.5. What do you understand by the following terms:

a) Firmware b) Live ware c) Hardware d) Software

6. Name and explain two types of RAM.7. Write the types of ROM memory and explain briefly about them.8. Differentiate between:

a) RAM and ROM

b) Primary Memory & Secondary Memory.

c) ALU and CU

d) UNIX and LINUX

e) Compiler and Interpreter

f) Data and information

9. Give the byte equivalent for:i) 1 KB ii) 1 MB iii) 1 GB iv) 1 TB v) 1 PB

10. Name two storage devices that you've used?11. What is MICR? Where is it mostly used? What is the major advantage and disadvantage of

MICR?12. What is the difference between OCR and OMR?13. Differentiate between-

i) Magnetic storage and Optical storage

ii) CD , DVD and BD

iii) microprocessor and microcomputer

iv) serial and parallel port

14. Suggest suitable device or media for the following:a) High quality print b) A high quality drawing

c) To store movies d) Economical printing of small quantities of data

15. Name the standard input and output device? 16. What are biometric sensors? Give an example where these sensors are used.17. Name the unit used for measuring processor speed. Name any two families of

microprocessor currently in use.18. Name main PCB board inside our computer system? Name main components on it?19. What is system tray ? What are the various components of the system tray ?20. How many types of Plotters are available. Give one application level difference between

them.21. How is data read from and written on to CD-ROM?

22. What is meant by microprocessor? Give the names of some popular microprocessors.23. Define cache. How do they improve performance of the system.24. Define operating system . Name any three mobile operating systems and explain them.25. What is application software ? Give three examples of each : Word Processing software,

Spread sheet, image editing software , Presentation software , Database applications , Video Editing software and sound editing software.

Subject: BIOTECH

One project has to be done by each student independently. The list of suggested topics is enlisted in ‘A Laboratory Manual of Biotechnology Class XI’ by CBSE. You can choose any other relevant topic also.

Please note:

1. The topic for the project should be short-listed and submitted for approval before 10th May 2017.2. Research work and collection of material for the project can be done from the library and/or

Internet.3. The project should be submitted on the day school reopens after summer holidays.

SUBJECT: ENTREPRENEURSHIP

Project Work: A case study on an entrepreneur

Things to be done:

Choose a role model Your project work should include the following details Background of the entrepreneur Lesson behind choosing him/her as your role model. Experiences from his/her life. Turning point Achievements and acknowledgements Changing times

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