BLS International School, Hathras

Session 2018-2019

Summer Holiday Homework

Class – X Dear Children,

Summer vacations are synonymous with fun, frolic, getting up late in the morning, playing for longer

hours with friends, going for picnics, watching fun filled shows on T.V.

It is a crucial time for you children, to plan and decide about your future as well. And for this you need

to do a research work on the career options available for you according to your interest and caliber.

Your Holiday Home Task is designed in the manner to help you to do research work in similar

capacity and contribute in the Career Fair that will be organized on Founders Day (8th July, 2018).

The Home task includes

(i) Research work in subjects of your interest and prepare projects /presentations for stalls. It can be in

group or an individual activity.

(ii) Given assignments per subject to be done in fair notebook.

(iii) Completion of Practical Files as per the Experiments/activities prescribed in the syllabus that

carries 5 marks in each Practical subjects.

(iv) An Investigatory project file to be prepared on topics given by teachers which carries 5 marks in

Practical subjects. (Only for Class XI & XII students).

(v) An article (write up/poem/story/riddle/joke/views, etc) on any topic of any subject for Annual

School Magazine-2018. Language no bar.

Holiday Homework will be assessed internally also by subject teachers and carries 5 marks.

Assigned task should be done by the students on their own taking help from the parents and peer

group.

Your projects will be displayed in exhibition on Founders Day (8th July’ 2018) in school for parents

and visitors to view and appreciate.

Holiday H.W. soft copy is uploaded on website, students can download & take its printout (Hard

copy).

It is compulsory to submit Holiday H.W. when school reopens after summer vacations.

Involve yourself in developing social and communication skills by meeting and greeting others.

Watch inspirational documentaries, movies and develop reading habits by reading any book of your

choice or a newspaper to keep yourself updated.

Be a guiding force for juniors and a supporting hand for elders. Build trust and confidence to improve

your personality.

Keep yourself updated about the new competitive opportunities/challenges that you are likely to face

in near future.

Principal

ENRICHMENT ACTIVITY & CAREER FAIR PROJECT

SUBJECT ACTIVITY/ PROJECT

1

ENG

LISH

In the form of flow chart, show the career path (giving necessary details of exams, qualification, training etc.) you think, you can take as a career in English Language. Taking any one topic given below For example – (i) Editor,(ii) Journalist, (iii) News-reader, (iv) Translator, (v) VJ/ RJ, (vi) mass communication

2

HIN

DI

( )

3

MA

TH

S Display a chart which is job oriented related to Math stream. Ex :

B.Tech, IIT, MCA, Banking, SSC, Govt. etc.

4

SCIE

NC

E

Do survey and prepare a report related to career opportunities in the field physics/ chemistry/ biology and present your work during career exhibition fair in July, 2018.

5

SST

1. A place wher Prepare PPT showing different career objectives with s.st (roll no.1-10) 2) Prepare advertisements on poster showing certain career related to s.st (roll no.11-20) 3) Survey report projecting career growth with s.st (roll no.21-30) 4)Make Chart/Scrap book/Model showing all the details related to specific job profile related any sub subject of social science.(roll no.31-40)

6

CO

MP

UTE

R

1-Make a power point presentation on the topic “Dennis Ritchie” the developer of ‘C’ language. Give an article on the given topic on A4 size sheet Topic 2-Cyber Crime( roll no 1to 10), Cyber Security (roll no 11to 20), Piracy of Software ( roll no 21to 30), E- Disposals ( roll no 31to 40), E-commerce ( 41 to last)

BLS INTERNATIONAL SCHOOL, HATHRAS SESSION 2018-2019

Summer Holiday Homework

Class- X

ENGLISH ASSIGNMENT Q no 1-Write an essay on “ If you become invisible for a week , what will you do “ ?

Q no 2- Write an essay on “If you become Prime Minister of country for a month, what will you do “?

Q no 3- Do the given worksheets in the pullout worksheet book.

Writing & Grammar Letter to Editor

Worksheet no. 30 , 31 Page no. 113 , 114

Editing Worksheet no. 47 , 48

Page no. 147 , 148

Omission Worksheet no. 50 , 51 Page no. – 153 , 154

Literature Worksheet no. – 60 ,61 , 62

Page no. – 175 to 180

Worksheet no.- 78 , 79 , 80 Page no.- 211 to 216

Worksheet no. – 84 , 85 Page no. – 223 to 226

Novel Worksheet no. – 101 , 102

Page no.- 259 to 262

Sentence reordering Worksheet no. – 52 Page no. – 157 , 158

HINDI ASSIGNMENT

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MATHEMATICS ASSIGNMENT

1. What is the difference between Algorithm and lemma?

2. Use Euclid division lemma to show that cube of any positive integer is of the form 9m ,

9m+1, 9m+8.

3. Prove √3 is an irrational number.

4. Prove √2+√5 is an irrational number.

5. Use Euclid’s division algorithm, find largest number that divides 1251, 9377 and 15628

leaving remainders 1,2,3 respectively. (Ans-625)

6. On a morning walk, three persons step off together and their steps measure 40 cm,

42cm and 45 cm respectively. What is minimum distance each should walk so that each

can cover the same distance in complete steps? (Ans- 2520cm)

7. Find Zeroes of Polynomials by factorization method and verify relationship between

Zeroes and Coefficient-

a. X2 -3X -10 b. t

2+6-7t

8. Find the quadratic polynomial, the sum and product of whose zeroes are √2 and -3/2

respectively. Also find its zeroes?

(Ans- -1/√2 and 3/√2)

9. Given zeroes of cubic polynomials X3- 6x

2+3x+10 are in A.P (Arithmetic Progression).

Find values of a and b as well as zeroes of given Polynomial. (Ans- a=2, b=3 or

a=2,b=-3 zeroes are -1,2,5)

10. Find all the zeroes of 2x4-3x

3-3x

2+6x-2. Given two zeroes are √2 and -√2.

(Ans- √2,- √2,1/2,1)

11. If α and β are Zeroes of Quadratic polynomial F(x)= ax2+bx +c, then evaluate-

a. 1/ α +1/ β -2 α β (Ans- -b/c -2c/a)

b. α2 β+ α β

2 (Ans- -bc/a

2)

12. If α and β are zeroes of Quadratic polynomial f(x)= x2-2x+3. Find the polynomial

whose roots(Zeroes) are α+2, β+2

(Ans- x2-6x+11)

13. Find p, q - 2x+3y=7 and 2px+py=28-qy, if pair of equations have infinitely many

solution. (Ans- P=4, q=8)

14. Solve 43x+67y=-24 (Ans—x=1, y=-1)

67x+43y=24

15. x/a +y/b = a+b ; x/a2 +y/b

2 =2 (Ans- x=a

2,y= b

2)

16. Two years ago, Salim was thrice as old as his daughter and six years later, he will be

four years older than twice her age. How old are they? (Ans- salim= 38 yr, daughter=

14 yr)

17. Draw the graph of equations x=3, x=5 and 2x-y-4=0. Also find area of quardrilateral

formed by the lines and the x axis. (Ans- 8 squared units)

18. The cost of 4pens and 4 pencil boxes is Rs. 100. Three times the cost of a pen is Rs. 15

more than the cost of a pencil box. Find the cost of a pen and a pencil box? (Ans=

Rs. 10, Rs. 15)

19. A motor boat can travel 30 km upstream and 28 km downstream in 7 hours. It can travel

21 km upstream and return in 5 hours. Find the speed of boat in still water and speed of

stream. (Ans- 10km/hr, 4km/hr)

20. Half the perimeter of a rectangular garden, whose length is 4m more than its width , is

36m . Find dimensions of garden by graphically. (Ans= length=20m, breadth=16m)

21. Solve by Cross Multiplication Method:-

8x+5y=9

3x+2y=4 (Ans- x=-2, y=5)

22. In a triangle ABC, ∠C= 3∠B = 2(∠A+ ∠B)

Find ∠A, ∠B, ∠C=? (Ans- ∠A=20; ∠B=40; ∠C=120)

Lab activity 1, 2, 3 in lab manual

SCIENCE ASSIGNMENT

Note: Do the assignment in fair notebook subject wise.

(Physics)

DO the following questions as per instructions. For Roll number 1 to 10

Q.1 A torch bulb has a resistance of 1 Ω when cold. It draws a current of 0.2 A from a source

of 2 V and glows. Calculate. (i) the resistance of the bulb when glowing and

(ii) explain the reason for the difference in resistance. Q.2. A lamp can work on a 50V mains taking 2A. What value of resistance must be connected

in series with it so that it can be operated from 200V mains giving the same power. Q.3. Write two points of difference between Electrical Energy and power. What is the

commercial unit of electric energy? Convert it into joules Q.4. Two resistors 15ohm and B ohm are connected in parallel. This combination is connected

in series to a 5 ohm resistor and a battery of e. m. f. 5 volt. If the current through B ohm resistor is B ohm resistor is 1/3 A, find the value of B Q.5. What equal lengths of iron wire and a constantan wire, each of 1 mm diameter must be

joined in parallel to give an equivalent resistance of 2 ohm ? Resistivities of iron and constantan are 10 and 49 micro ohm-cm respectively.

For Roll number 11 to 20 Q.6. Three bulbs each having power P are connected in series in an electric circuit. In another

circuit another set of three bulbs of same power are connected in parallel to the same source. (i) Will the bulb in both the cases glow with same brightness? Justify your answer

(ii) Now let one bulb in each circuit get fused. Will the rest of the bulbs continue to glow in the circuit? Give reason.

(iii) Representing each bulb with a resistor, draw circuit diagram for each case. Q.7. Explain the role of fuse in series with any electrical appliance in an electric circuit. Why

should a fuse with defined rating for an electric circuit not be replaced by one with a larger rating.

Q.8. Five resistances are connected as shown in the diagram. Find the equivalent resistance between the points A and B.

Q.9. In the circuit shown, when R is removed, additional resistance of 72 ohm must be inserted in series with the battery in order to keep the current in the 30ohm resistor unaltered.

Find the value of R.

Q.10. Series arrangement is not used for domestic circuits. List any three reasons. For Roll number 21 to 30

Q.11. The ratio of resistivities of two materials a and b is 1:2, ratio of their length is 3:4 and if

the ratio of radii is 2:3 find the ratio of resistance of a and b. Q.12. Two identical resistors are first connected in series then in parallel. Find the ratio of

Equivalent resistance in two cases.

Q.13. Current versus Potential difference graphs for two metallic conductors A and B are

given in adjoining figure. Which of the two conductors have higher resistance?

Q.14. Two identical immersion heaters are to be used to heat water taken in a large container.

Which one of the following arrangements would heat the water faster: (i) Connecting the heaters in series with the main supply or, (ii) Connecting the heaters in parallel with the main supply.

Give reasons for your answer.

For Roll number 30 onwards Q.15. Ammeter reading is noted by placing a nichrome wire of length “L” between points X

and Y. (a) What changes are observed in the ammeter reading we insert another nichrome wire of

same thickness but twice the length? (b) State the changes that are observed in ammeter reading if we double the area of cross section without changing the length of the wire.

Justify your answer in both the cases. Q.16. What is joule’s heating effect? Obtain an expression for heat produced in a resistor ‘R’

when a current ‘I’ flows through it for time‘t’.

Q.17. When a high resistance voltmeter is connected directly across a resistor its value is 2 V. An electric cell is sending the current of 0.4 A in the electric circuit in which the rheostat is

also connected to vary the current. a) Draw the equivalent labeled circuit for the data given.

b) Find the resistance of the resistor. c) Name and state the law applicable in the given case. Draw V-I graph for the set of obtained

values. Q.18. An electric bulb is rated at 60W, 220 V. Calculate its resistance. If the voltage drops to

192 V calculate the power consumed and the current drawn by the bulb (Assume the resistance of the bulb remains unchanged)

Q.19. Consider the following Circuit Diagram. If R1= R2 =R3 =R4 =R5 =3ohm. Find the equivalent resistance (Rs) of the circuit.

(Chemistry)

Do the following questions as per instructions . For Roll number 1 to 15 Q1: A white coloured water insoluble substance X on reacting with dilute H₂SO₄ released a colourless and odourless gas accompanied by brisk effervescence. When the gas was passed through water, the solution obtained turned blue litmus red. On bubbling the gas through lime water, it initially became milky and milkiness disappeared when the gas was passed in excess. Identify the substance X‘. Write its chemical equations of the reactions involved. Q2: Ahmad took a magnesium ribbon (cleaned) and burned it on a flame. The white powder formed was taken in a test tube and water was added to it. He then tested the solution formed with red and blue litmus paper. What change was seen? Why? Q3:A shiny brown coloured element ‘X’ on heating in air becomes black in colour. Name the element ‘X’ and the black coloured compound formed. Q4: Marble statues often slowly get corroded when kept in open for a long time. Assign a suitable explanation. Q5: Compound ‘X’ decomposes to form compound ‘Y’ and CO₂ gas. Compound ‘Y’ is used in the manufacturing of cement. (i) Name the compounds X and Y. (ii) Write the chemical equation for this decomposition reaction.

For Roll number 16 to 30

Q6: During the reaction of some metals with dilute hydrochloric acid, following observations were made. (a) Silver metal does not show any change (b) The temperature of the reaction mixture rises when aluminium (Al) is added. (c) The reaction of sodium metal is found to be highly explosive (d) Some bubbles of a gas are seen when lead (Pb) is reacted with the acid. Explain these observations giving suitable reasons.

Q7: A magnesium ribbon is burnt in oxygen to give a white compound X accompanied by emission of light. If the burning ribbon is now placed in an atmosphere of nitrogen, it continues to burn and forms a compound Y. (a) Write the chemical formulae of X and Y. (b) Write a balanced chemical equation, when X is dissolved in water. Q8: A silver article generally turns black when kept in the open for a few days. The article when rubbed with toothpaste again starts shining. (a) Why do silver articles turn black when kept in the open for a few days? Name the phenomenon involved. (b) Name the black substance formed and give its chemical formula. Q9: On heating blue coloured powder of copper (II) nitrate in a boiling tube, copper oxide (black), oxygen gas and a brown gas X is formed (a) Write a balanced chemical equation of the reaction. (b) Identity the brown gas X evolved. (c) Identity the type of reaction. (d) What could be the nature (acidic, basic or neutral) of aqueous solution of the gas X? Q10: Give the characteristic tests for the following gases (a) CO₂ (b) SO₂ (c) O₂ (d) H₂

For Roll number 31 Onwards Q11: What happens when a piece of (a) zinc metal is added to copper sulphate solution? (b) aluminium metal is added to dilute hydrochloric acid? (c) silver metal is added to copper sulphate solution? Also, write the balanced chemical equation if the reaction occurs .Q12: What happens when zinc granules are treated with dilute solution of H2SO4, HCl, HNO₃, NaCl and NaOH, also write the chemical equations if reaction occurs. Q13: On adding a drop of barium chloride solution to an aqueous solution of sodium sulphite, white precipitate is obtained. (a) Write a balanced chemical equation of the reaction involved (b) What other name can be given to this precipitation reaction? (c) On adding dilute hydrochloric acid to the reaction mixture, white precipitate disappears. Why? Q.14 You are provided with two containers made up of copper and aluminium. You are also provided with solutions of dilute HCl, dilute HNO₃, ZnCl₂ and H₂O. In which of the above containers these solutions can be kept? Q15: Identify the oxidizing agent, reducing agent, substance oxidized and reduced in the following reactions. (a) Fe₂O₃ + 3CO → 2Fe + 3CO₂ (b) H₂O + F₂ → HF + HOF (c) CuO + H₂ → Cu + H₂O (d) 3Fe + 4H₂O → Fe₃O₄ + 4H₂ (e) CuSO₄ + Zn → Cu + ZnSO₄ (a) Fe₂O₃ + 3CO → 2Fe + 3CO₂

(Biology)

(1) Due to availability of less water, how does the plant cope up with lack of water in

desert conditions?

(2) After a vigorous exercise, you may experience cramps in your leg muscles. Why does

this happen?

(3) What will happen if carbon monoxide combines with hemoglobin?

(4) Food moves down the gut by peristalsis. Which region of brain controls peristalsis?

(5) Name the pigment present in plants, which can absorb solar energy.

(6) Name the respiratory organs of (i) fish (ii) mosquito (iii) earthworm.

(7) Which of the four chambers of the human heart has the thickest muscular walls?

(8) What is the difference b/w reflex action and walking?

(9) Which part of visible spectrum is absorbed by chlorophyll pigments?

(10) How does respiration in plants differ from that in animals?

(11) Name the cartilaginous flap which closes the glottis to check the entry of food into it

during swallowing.

(12) Which equipment is used to facilitate breathing during serious breathing problems?

(13) Chloroplast are called energy convertors. Explain.

(14) Why is the rate if breathing much faster in aquatic organisms than those of terrestrial

organisms?

(15) Why are glomeruli considered as dialysis bags?

(16) Autographs synthesize food for the living world. Justify this statement in one sentence

only interconnecting autotrophy and heterotrophy.

(17) Veins and arteries carry blood. Which of these carry blood?

a) Away from the heart?

b) Back to the heart?

(18) What happens at the synapse between two neurons?

(19) Name the areas in a woody stem through which respiratory exchange of gases take

place.

(20) Name the hormones secreted by an endocrine gland during emergency. Name the

gland which produces these hormones.

SOCIAL SCIENCE ASSIGNMENT

History 1. Mention four steps taken by the French to improve economics condition of Vietnam. 2. Describe the causes of popularity of “Go East Movement.”

3. Indians were outraged by the Rowltt Act.” Give reasons. 4. How did the tribal peasants interpret the message of Mahatma Gandhi and the idea of

Swaraj especially in Gudem Hills of Andhra Pradesh? 5. “Muslim political organization in India were lukewarm in their response to the civil

disobedience movement. ” Give reasons. Map Questions

1. A place where session of Indian National Congress was held in Sep.1920, Dec.1920, 1927, 1929.

2. A place of peasant Satyagraha in Gujrat 3. A place where movement for indigo planters took place.

4. Jalianwala Bagh, Chauri Chaura. Geography

1. What were the view points of Gandhi ji on resources conservation? 2. Describe the steps taken for the resources conservation at world level.

3. Explain any four human activities which are responsible for land degradation in India. 4. Explain the techniques to conserve soil. Also show the distribution of different soils on an

outline map of India.

Civics 1. Both Belgium and Sri Lanka are democracies but they follow different systems of power

sharing.” support the statement by minimum points of differences? 2. What do you understand by community govt.? What values does it promote?

3. “If we would not have linguistic formation of states in our country, we might have had-one language and 14-15 nations.” What does this statement signify?

4. The creation of a linguistic state was the first and major test for democratic politics in our country.” justify the statement.

5. Explain 5 changes towards decentralization brought in the constitution after the Amendments made in 1992.

Economics

1. Sustainable development is related to present as well as future growth of a nation.” Do you Agree? How?

2. How can we save our limited energy resources? Suggest any three ways of its judicious use. 3. “Workers are not exploited in organized sector.” Explain reason for your answer.

4. How do tertiary sector help in development of primary & secondary sectors? Explain. 5 . “Private sector has an edge over public sectors.” Discuss.

6. Explain a relative share of different sector of GDP in India during 2010-11.