ASSIGNMENT

CLASS 7TH

SCIENCE

CHAPTER: 1 NUTRITION IN PLANTS

1. Fill in the blanks

(1) Green plants are called __________ since they synthesise their own food.

(2) The food synthesised by the plants is stored as__________

(3) In photosynthesis solar energy is captured by the pigment called__________

(4) During photosynthesis plants take in _________ and release____________

(5) Proteins contain__________

(6) Framers enrich the soil by adding __________ and__________

(7) In most of green plants, photosynthesis takes place in the__________

(8) Plants are unable to use atmospheric__________

(9) Green patches in stagnant water are aquatic__________

(10) During photosynthesis, __________ energy is captured by the leaves and stored as

food.

(11) The occurrence of photosynthesis is tested by the presence of _____________ in

the leaf.

(12) In lichena ______________ and _____________ live in symbotic association.

(13) During photosynthesis ___________________________ energy is converted into

the _________________ energy of food.

(14) Leguminous plants are examples of _____________________ association.

(15) _______________________________ plants have Rhizobium bacteria in their

roots.

2. Multiple choice questions

1. Amarbel is an example of –

(a) Autotroph

(b) Parasite

(c) Heterotroph

(d) Host

2. The plant which traps a feed on insects is-

(a) Cucuta

(b) Rose

(c) Pitcher plant

(d)sunflower

3. Which of these components of food can be synthesized by plants-?

(a)Carbohydrate

(b)Fats

(c)Proteins

(d)All of these

4. Which of these is/are necessary for photosynthesis to takes place-?

(a)Carbon dioxide

(b)Chlorophyll

(c)Water

(d)All of these

5. The trapped insect gets entangled in the hair in-

(a)Green plant

(b)Insectivorous plants

(c)Grass

(d)None of these

3. Very Short answer type questions

1. What are stomata?

2. Define autotrophs?

3. Name the end product of photosynthesis?

4. Name the green pigment present in the leave?

5. What are lichens?

6.What is nutrition?

7.Are birds autotrophs?

8.What is a heterotroph?

9.Give an example of saprophyte?

10.Do leaves that do not appear green have chlorophyll?

11.Name the gas that is produced during photosynthesis?

12.Give an example of a partial parasitic plant?

13.Distinguish between autotrophs and heterotrophs?

14.Write the word equation for photosynthesis?

CHAPTER: 06 PHYSICAL AND CHEMICAL CHANGES

Fill in the blanks :

(a) In______________________change no new substance is formed.

(b) A foul smelling spoiled food is a_______________________change.

(c) Properties such as shape, size, colour and state of a substance are called____________

properties.

(d) Turning of lime water to milky is a standard test of_________________________gas.

(e) A chemical change is also called a_________________________

(f) Photosynthesis is an example of __________________________change.

(g) Burning of any substance is a____________________________change.

(h) Conditions for rusting of iron is ____________________and____________________

(i) The chemical name of vinegar is________________________________

Multiple Choice Questions

Question 1

Galvanisation is a process used to prevent the rusting of which of the following?

(a) Iron

(b) Zinc

(c) Aluminium

(d) Copper

Question 2

Which of the following statement is incorrect for a chemical reaction?

(a) Heat may be given out but never absorbed.

(b) Sound may be produced.

(c) A colour change may take place.

(d) A gas may be evolved

Question 3

Which of the following is a physical change?

(a) Rusting of iron

(b) Combustion of magnesium ribbon

(c) Burning of candle

(d) Melting of wax

Question 4

Which of the following is a chemical change?

(a) Twinkling of stars

(b) Cooking of vegetables

(c) Cutting of fruits

(d) Boiling of water

Short answer type Question 1 Differentiate between physical and chemical change with 2 examples of each. Question 2 Write down any 4 characteristics of chemical change. Question 3 Why is it always advised not to play with fireworks? Question 4 What is the role of the Ozone layer in our atmosphere? Question 5

Define � (1) galvanization (2) Crystallization process. Fill in the blanks in the following statements:

(a) When carbon dioxide is passed through lime water, it turns milky due to the formation of

_________.

(b) The chemical name of baking soda is _________.

(c) Two methods by which rusting of iron can be prevented are _________ and _________.

(d) Changes in which only _________ properties of a substance change are called physical

changes.

(e) Changes in which new substances are formed are called _________ changes.

CHAPTER 14 Electric Current and its Effects

Question 1

1. Fill in the blanks:

(a) The path along which electric current flows is called an______________________

(b) Current does not flow in an___________________________ electric circuit.

(c) Name the alloy used as the heating element in an electric toaster_________________

(d) A fuse wire has a _____________ electric resistance &________________melting point.

(e) ________________________discovered that electric currents create magnetic field.

(f) The credit for the invention of the electric bulbs goes to__________________________

(g) A combination of two or more cells is called a _________.

(h) Full form of MCB is______________________________________________________

(i) Full form of CFL is_______________________________________________________

2. Multiple Choice Questions

Question 1

When a switch is in OFF position,

(i) circuit starting from the positive terminal of the cell stops at the switch.

(ii) circuit is open.

(iii) no current flows through it.

(iv) current flows after some time.

Choose the combination of correct answer from the following.

(a) all are correct

(b) (ii) and (iii) are correct

(c) only (iv) is correct

(d) only (i) and (ii) are correct

Question 2

Which of the following precautions need not be taken while using electric

gadgets/appliances/circuit?

(a) We should never touch a lighted electric bulb connected to the mains.

(b) We should never experiment with the electric supply from the mains or a generator or

an inverter.

(c) We should never use just any wire or strip of metal in place of a fuse.

(d) We should never turn the switch in ON position.

Question 3

Which of the following does NOT contain a heating element?

(a) Electric iron

(b) Electric heater

(c) Electric oven

(d) Electric bell

Question 4

Which of the following statements is correct of a switch?

(a) It allows the flow of electricity.

(b) It controls the brightness of a bulb.

(c) It controls the power of the batteries.

(d) It fuses a bulb.

Question 5

Identify the element that is used for making the filament in bulbs.

(a) Silver

(b) Copper

(c) Aluminium

(d) Tungsten

4. Fill in the blanks.

i. Longer line in the symbol for a cell represents its positive terminal.

ii. The combination of two or more cells is called a battery.

iii. When current is switched ‘on’ in a room heater, it produces heat.

iv. The safety device based on the heating effect of electric current is called a fuse.

5. True/False

i. To make a battery of two cells, the negative terminal of one cell is connected to

the negative terminal of the other cell. False

ii. When the electric current through the fuse exceeds a certain limit, the fuse

wire melts and breaks. True

iii. An electromagnet does not attract a piece of iron. False

iv. An electric bell has an electromagnet. True

6. What is electric current?

7. Why does light bulb get hot?

8. Who discovered magnetic effect of current?

9. How does a bulb glow?

10. Write some uses of battery.

11. Is it possible for a wire to melt and break? Why?

12. What is the heating effect of the electric current?

HINDI---ASSIGNMENT (2020)

नोट:---- सभी प्रश्न अधिन्यास कााँपी मे करे।

प्र01 “हम पंछी उन्मुक्त गगन के” कधिता को सधित्र धिजाइनर शीट पर धिधिए।

प्र02. क्या आपने या आपकी जानकारी मे ककसी न ेपक्षी या पशु को पािा ह,ै जब

आप पक्षी या पशु पािते ह,ैतो उसकी देिभाि ककस प्रकार की जाती होगी धिधिए।

प्र03 “दादी मााँ” पाठ के आिार पर-अपनी दादी मााँ के स्िभाि की धिशेषताएाँ धित्र सधहत धिधिए।

प्र04. “नकदयो के प्रधत भारतीयो का दधृिकोण “ धिषय पर अनचु्छेद धिधिए।

प्र05. धनम्नधिधित काव्ांश को पढकर प्रश्नो के उत्तर दें।

कठपुतिी गुस्स ेसे उबिी

बोिी—ये िागे

क्यो ह ैमेरे पीछे—आगे ?

इन्ह ेतोि दो,

मुझे मेरे पााँिो पर छोि दो।

1. कठपुतिी क्यो क्रोधित हो गई ?

2. कठपुतिी ने क्या कह?

3. कठपुतिी के आगे-पीछे िागे क्यो होते ह?ै

4. कठपुतिी के कथन मे कौन-सा भाि धछपा ह?ै

प्र06. धनध्न्िधित प्रश्नो के उत्तर दे।

1.बकासुर नाम का राक्षस ककस नगरी मे रहता था? िह िोगो से क्या िाहता था ?

2. भीम और हनुमान की भेंट ककस प्रकार हुई ?

3. प्रधतकामी कौन था ?

4. द्रोणािायय और द्रपुद न ेकहााँ रहकर धशक्षा प्राप्त की ?

5. िाक्षागृह का धनमायण कहााँ हुआ था?

Social science

1. Draw the colourful interior of the earth and explain each part of it

2. These are Seven Wonders of the World. Select any one of the given below.

a. The Great Wall of China b. Christ the Redeemer Statue

c. Machu Picchu d. Chichen Itza

e. The Colosseum f. The Petra

g. The Taj Mahal

On an A4 sheet draw or paste its picture and write down a paragraph about it. The paragraph must

include the information such as the location of the monument, by whom it was constructed, period

of construction, material used, architectural design etc.

3. Imagine you are a traveller. Select any one state of India draw and colour its map and write down

15-20 sentences about it. You can include the information such as language, food, festivals, rivers,

occupation of people, important buildings etc.

5. Collect the following information about Lok Sabha Elections 2019.

a. Which party won the maximum seats?

b. For how many seats the election was conducted?

c. Which party formed the government at the centre?

d. Who is the newly elected Prime Minister?

e. Who won the election in your constituency (city)?

Which party does he/she represent? Also draw and colour the logo of The Election Commission of

India.

*ALL THE WORK WILL BE DONE IN FILE.

MODERN SCHOOL VAISHALI CLASS VII ( MATHEMATICS )

INTEGERS ASSIGNMENT

1. Select the Greater of the two: -9 and 9

2. Solve: (-54) / ___ =-1

3. Find the product of: -13 x-5

4. Division of a positive number with a negative number is __________.

5. An elevator descends into a mine shaft at the rate of 5 m/min. If the descent

starts from 50 m above the ground level, how long will it take to reach – 150m.

6. Answer the question: The smallest counting number

7. Find the product of: 7 x (-22)

8. Divide: (-3250/(-13)

9. Find the predecessor of -6

10. The successor of _1 is

11. Add the integers: (-25-26)=(26+25)

12. In Shimla, the temperature was -6 degree Celsius on Monday and then it

dropped by 2 degree Celsius on Tuesday. What was the temperature on

Tuesday? Next day it rose up 3 degree Celsius. What was the temperature on

Wednesday?.

13. Find the product of: 26 x10 and -5

14. Add the integers: (-4) +(-4)=

15. Answer the question: The opposite of -76

16. Divide: (-56)/(-7)

17. Choose the correct option: Multiplication of a negative number with a

negative number is ________.

18. Solve: 13 ÷ [(–2) + 1] = _______

19 Find the product of 1 and reciprocal of -5.

20. Find the predecessor of 5

Q21 What is the value of (−22)−[(−23)−(−17)−(−61)](−22)−[(−23)−(−17)−(−61)] Q22 What should be subtracted from -9876 to obtain -9512 Q23 The temperature of a city is 40C. Next day the temperature falls by 50C. What is the temperature of the city next day Q24 Fill in the blanks

i. Sum of integer and its additive inverse is ____________

ii. Sum of -22 and -44 is ______________ iii. -36 ÷ (_______)=-9 iv. _________ is absolute value of -998 Q25 A divers descends 20 feet in the water from the boat at the surface of a lake. He then rose 12 feet and descends another 18 feet. At this point what is his depth in water? Q26 Verify a-(-b) =a + b for the following values of ‘a’ and ‘b’

a. a=34 b=73 b ) a=45 b=30 Q 27 Write down the pair of integers whose

a)Sum is -4 b) Sum is 0 C) Difference is 2 d) Difference is -6

Q 28Verify the following a ) (-22) × [(-4) + (-5)]=[(-22) × (-4)] + [(-22) × (-5)] b) (-12) × [(3) + (-9)]=[(-12) × (4)] + [(-12) × (-9)] Q 29Evaluate

a) (-36)÷(-4) b ) (0)÷(-12) c ) [(-30)÷5]÷2

Q 30The price of the stock decreases Rs. 45 per day for four consecutive days. What was the total change in value of the stock over 4 day period? Q31A group of hikers is descending the mountain at a rate of 600 feet per hour. What is the change in elevation of hiker after 6 hours? Q32An elevator descends into a mine shaft at the rate of 6 m/min. If the descent starts from 10 m above the ground level, how long will it take to reach -350 m. Q33 In a test (+5) marks are given for every correct answer and (-2) marks are given for every incorrect answer.

i. Radhika answered all the questions and scored 30 marks and get 10 correct answers

ii. Jay also answered all the questions and scored (-12) marks though he got 4 correct answers

How many incorrect answers had they attempted? Q 34 In a test (+5) marks are given for every correct answer and (-2) marks are given for every incorrect answer and 0 for answer not attempted. Ram gets 3 correct and 4 incorrect out of 7 questions he attempted. What is his score? Q35 .Mt. Everest, the highest elevation in Asia, is 29,028 feet above sea level. The Dead Sea, the lowest elevation, is 1,312 feet below sea level.

What is the difference between these two elevations Q35. In Buffalo, New York, the temperature was -14°F in the morning. If

the temperature dropped 7°F, what is the temperature now?

Q36. A submarine was situated 800 feet below sea level. If it ascends 250

feet, what is its new position?

Q37. Maggie owes the candy store $35. Each of 5 friends will help her pay

off her debt. How much will each friend pay?

Q38. Lilly bought 4 pairs of blue jeans at $32 each. How much money did

she pay the clerk?

Q39. A submarine was situated 450 feet below sea level. If it descends

300 feet, what is its new position?

Q40. In the Sahara Desert one day it was 136°F. In the Gobi Desert a

temperature of -50°F was recorded. What is the difference between these

two temperatures?

FRACTION WORK SHEET

1) Represent the following rational numbers on the number line:

a)-3/4 b) 31/-6 c) -1/2 d) ¾

2) Write the following rational numbers in the standard form:

a) 5/15 b) -24/40 c) 33/-77 d) -45/-105

3) Compare the following rational numbers:

1) -9/27, 6/-18 2) -5/7, 10/-6

3) 3/-8, -15/40 4) -11/7, 33/21

4) Arrange the following rational numbers in the descending order:

1) 2/-3, -4/9, -5/12, 7/-18

2) 3/-4, -5/12, -7/16, 9/-24

5) Arrange the following rational numbers in the ascending order:

1) 2/5, 1/3, 3/4, 1/6 2) 5/6, 7/8, 11/12, 3/10

6) Fill in the blanks by the correct symbol >, = or < :

1) | 3/4| ---------| ½ 2) |-1/2| ----- | -3/4 |

7) Add:1) 3/7 and -9/7,2) 5/9 and 7/-9

3) 2/5, 5/-9 and -6/15

8) Simplify:1) -2 + ( 3 / 8 ) + ( - 1 / 5 ) , 2) (2/3) + ( -7/11) + (-1/4 )

9) Verify that a + b = b + a by taking (1) a = -7/5, b = 2/7

(2) a = -1 , b = -2/3

10) Verify that (a+b)+c.=a+(b+c) by taking

(1) a = -2 , b = -2/3 , c = -3/4

(2) a = -12, b = -9/11, c = 7/-12

11) Simplify the following:

1) (2/3) + (-4/5) + I + (-2/3) + (-11/5)

2)(5/8) + (-8/9) + 0 + (-13/3) + (17/24)

12) Subtract 1) (-3/4) from (1/2) 2) (5/8) from (-3/14)

13) What should be added to (-7/20) to get (-2/5)?

14) The sum of two rational numbers is (-3/7). If one of the number is (-5/8)

find the other.

15) The sum of two rational numbers is (-5/8). If one of the number is (-6/11),

find the other number.

16) To which number should (2/3) be added to give (-11/4)?

17) From which number should (-11/4) be subtracted to give (-11/4)?

18) Find the product of :

1) 5/9, -2/5 2) -5, -3/15

EXPONENT AND POWER

1 THE VALUE OF 20 + 30

2 SIMPLIFY [ ( 2 )-1 + ( 4 )

-1 + ( 3 )

-1 ]

3 FIND X SO THAT ( -3 )X +1 X (-3 )5 = (-3 )7

4 MASS OF MARS IS 6.42 X 1029 KG AND THE MASS OF THE SUN IS 1.99 X 1030KG

. WHAT IS THE TOTAL MASS ?

5 EXPRESS IN POWER NOTATION ( A ) 125 ( B ) 81 / 625

6 A BOY IS ASKED TO WRITE 25 X 92 BUT HE WROTE 2592 . THE NUMERIC

DIFFERENCE BETWEEN THE TWO IS .

7 FIND THE RECIPROCAL OF ( -2/ 3 )4 X ( -3 /4 )3.

8 WHICH IS GREATER 43 OR 34.

9 FIND THE VALUE OF ( 5X )3 WHEN X = - 2/ 5.

10 FIND THE VALUE OF 40.

11 .FIND THE VALUE OF ( 90- 70) X ( 9 + 7 ).

12.SIMPLIFY : ( 24 X 25 ) ÷ ( 22 X 23 ).

13 IF 3X = 27 THEN 3X-2.

14 IF 4X = 256 , THEN FIND THEVALUE OF 62X – 8.

15 WRITE IN SCIENTIFIC NOTATION: A ) 72000 B) 8 0000000

16 SIMPLIFY: 𝟐𝟓 𝑿 𝟗𝟐

𝟖𝟐×𝟑𝟓

17 THE EARTH HAS 1.353 X 109 CUBIC KM OF SEA WATER . EXPRESS IN

STANDARD FORM.

18 simplify: 𝟐𝟓 𝑿 𝟑𝟒 ×𝟏𝟔

𝟑𝟐 𝑿 𝟔𝟒

19 FIND THE VALUE OF X IN : ( 4 /5 )8 X ( 4 /5 )7 = ( 4 /5 ) 2X-1

20 FIND THE VALUE OF X IN ( -3 )X-1 = -243.

DATA HANDLING

1. Find the mean of the following data.

(a) 9, 7, 11, 13, 2, 4, 5, 5

(b) 16, 18, 19, 21, 23, 23, 27, 29, 29, 35

(c) 2.2, 10.2, 14.7, 5.9, 4.9, 11.1, 10.5

2. Find the mean of first ten whole numbers.

3. Find the mean of first 5 prime numbers.

4. The mean of 8, 11, 6, 14, x and 13 is 66. Find the value of the observation x.

5. The mean of 6, 8, x + 2, 10, 2x - 1, and 2 is 9. Find the value of x and also the

value of the observation in the data.

6. Find the mean of the following distribution.

(a) The age of 20 boys in a locality is given below.

(b) Marks obtained by 40 students in an exam are given below.

7. Find the mode of the following data.

(a) 12, 8, 4, 8, 1, 8, 9, 11, 9, 10, 12, 8

(b) 15, 22, 17, 19, 22, 17, 29, 24, 17, 15

(c) 0, 3, 2, 1, 3, 5, 4, 3, 42, 1, 2, 0

(d) 1, 7, 2, 4, 5, 9, 8, 3

8. The runs scored in a cricket match by 11 players is as follows:

7, 16, 121, 51, 101, 81, 1, 16, 9, 11, 16

Find the mean, mode, median of this data.

9. The weights in kg of 10 students are given below:

39, 43, 36, 38, 46, 51, 33, 44, 44, 43

Find the mode of this data. Is there more than 1 mode? If yes, why?

10. The marks obtained by 40 students out of 50 in a class are given below in

the table.

Find the mode of the above data.

12. Find the median of the following data.

(a) 27, 39, 49, 20, 21, 28, 38

(b) 10, 19, 54, 80, 15, 16

(c) 47, 41, 52, 43, 56, 35, 49, 55, 42

(d) 12, 17, 3, 14, 5, 8, 7, 15

13. The following observations are arranged in ascending order. The median

of the data is 25 find the value of x.

17, x, 24, x + 7, 35, 36, 46

14. The number of students in 7 different classes is given below. Represent this data on the bar graph.

6th 7th 8th 9th 10th 11th 12th

130 120 135 130 150 80 75

15 The number of absentees in class VIII was recorded in a particular week. Represent this data on the bar graph

Mon. Tues. Wed. Thurs. Fri. Sat.

130 120 135 130 150 80

(a) On which day the maximum and minimum students were absent?

(b) How many students were absent on Wednesday and Friday?

CLASS –VII SUBJECT: ENGLISH

SECTION: GRAMMAR

A. Fill in the blanks with the correct form of the adjectives given in the

brackets:

1. I have the ___________ parents in the world. ( best )

2. Let’s be ____________________ about the whole matter. ( sensible )

3. The boy said, “I would like to have __________________

qualifications in this field.”

(High)

4. The _______________ thing happened at school today. ( funny )

5. The witness could not have given a __________________ reply. (

honest )

6. Is that true? I couldn’t have been _________________ ! ( surprised )

7. Everybody thought Swami was very ______________ when he caught

the thief. ( brave )

8. Kajal is very sweet. She is one of the ________________ people I

know. ( sweet )

B. Fill in the blanks with a, an or the put a cross when no article is required:

1. __________ Large number of _____________ people were present at

______________ concert.

2. We can write _____________ letter in ____________ Ink or with

______________ pencil.

3. _______________ Cigarette is made up of _______________ tobacco

and ___________ paper.

4. In ____________ morning she goes to ___________ School and in

__________ evening she plays ____________ violin.

5. _________________ Handkerchief is made of _____________ piece of

______________cloth.

6. __________________ Engine driver does not have ______________

easy life.

C. Do as directed:

1. Vivek talks softly during lunch. ( change into past continuous )

2. Hena cooks very nice food. ( change into present perfect)

3. By next year, Basab will have worked for forty years.

(Change into future perfect continuous tense)

4. Zainab had been talking like a guardian. ( change into simple present

)

5. Anu paints very well. ( change into simple past )

6. She went for a film after lunch. ( change into future continuous )

7. The teacher asked us to finish our work faster. ( change into past

perfect continuous )

8. Tanya was studying for the test. ( change into simple future)

9. The boys play in the field. ( change into present continuous tense)

D. Change the following sentences into negative form:

1. There were many people at the fair.

2. We’ve won the match!

3. The minister promised reforms.

4. Did you get the news?

5. Has the paper arrived?

6. Wait for me.

E. Choose the correct verb from the brackets and rewrite each sentence.

1. Anybody (is/ are) welcome.

2. None of the girls (was/ were) absent during the last week.

3. Each of the players (was/ were) given a prize by the Head master.

4. Each painting (was /were) examined but none (was/ were) found worthy of

the prize.

5. Every one of those boys (is /are) able to learn this poem.

6. Neither of the films (was /were) liked by the people.

7. Everybody in our school (play /plays) games in the evening.

F. Identify whether the underlined verbs are transitive or intransitive.

1. The streetlights shone brightly.

2. Lock your suitcase.

3. My grandmother eats once in a day.

4. Owls keep awake at night.

5. Alice painted a mural.

6. Next summer, I will run my first marathon.

G. Pick the correct determiners in these sentences:-

1.(The/ A )lady in a white saree is (my /mine) grandmother.

2.( Each /Much) student of the class was given a storybook.

3.Did you face (any/ few) problem while coming here?

4. (Several /Every) books of class five are written by my uncle.

5. (Whose/ Both) pencil box is lying on my table.

6.(Five /Fifth) boys of our class are participating in the competition.

7. (Much /Many) invitees are attending the functions.

8. (A/ Any) beggar stood at my doorstep seeking alms.

SECTION: LITERATURE ( CH 1 , 2 &3)

A. Reference to the context:

1. “ Tell you truth. “

a. Who said these words and to whom?

b. What is the ‘truth’ mentioned here?

B. Short Answer Questions:

1. Did the kidnappers plan was a successful one?

Give reasons in support of your answer.

2. What is the message conveyed by the poem ‘ Winter Song’?

3. Why the poet is longing for summer season?

4. Why did the porter feel suspicious about the man in Room Number

Eight?

5. Why was Doctor Cuss panting heavily out of fear?

6. What was the plan made to catch The Invisible Man?

C. Long Answer Questions:

7. Suppose you get a chance to become invisible for a day. How would

you like to spend your day?

Write it in your own words. (70-80 words)