SANT NIRANKARI PUBLIC SCHOOL

AUGUST – ASSIGNMENT 1 (WEEK -3)

CLASS X – ENGLISH Lesson: Footprints Without Feet Q.1. Read the passages given below and answer the questions that follow: A. As they gazed, a remarkable sight met their eyes. A fresh footmark appeared from nowhere! Further footprints followed, one after another, descending the steps and progressing down the street. (a) Who are ‘they’ in the above extract? (b) Who was making these footprints? (c) Find the word from the extract that means the same as ‘continuing’. (d) What is the opposite of ‘remarkable’? B. Suspicion grew even stronger when he suddenly produced some ready cash, though he had admitted not long before that he had no money. (a) Who is ‘he’ in the above extract? (b) What was ‘he’ suspected for? (c) Find a word / phrase from the extract that means the same as ‘money’. (d) Give a synonym of ‘suddenly’. Q.2. Answer the following questions in 30-40 words each. a. Why were the two boys in London fascinated and surprised?

b. What did Griffin do in the shop of a theatrical Company?

c. What was the curious episode that took place in the clergyman’s study?

d. What did Griffin do when he became furious? e. Why did he landlord want to eject Griffin? What did Griffin do in this regard? Q.3. Answer the following questions in 100-150 words each. a. Did Griffin misuse or take advantage of his scientific discovery? Explain. b. Explain the character sketch of Griffin, the protagonist of the story.

SANT NIRANKARI PUBLIC SCHOOL CLASS X – ENGLISH

AUGUST – ASSIGNMENT 2 (WEEK -3)

Lesson: The Making of a Scientist Q.1. Read the passages given below and answer the questions that follow: A. So he did, and did he ever! Beginning in kindergarten, Ebright collected butterflies with same determination that has marked all his activities. (a) What does ‘he did’ in the extract refer to? (b) What else did he collect other than butterflies? (c) Find a word from the extract, which means ‘resoluteness’. (d) What is the opposite of ‘Beginning’?

B. If the theory proves correct, it will be a big step towards understanding the processes of life. (a) What is the theory about? (b) Who proposed the theory? (c) Which part of speech is ‘life’ as used in the given extract? (d) Give a synonym of ‘correct’. Q.2. Answer the following questions in 30-40 words each. a. What rare achievement did Richard manage at the age of twenty-two?

b. How did Ebright’s mother help him in becoming a scientist? c. Why did Richard lose interest in tagging butterflies?

d. Mention any two of Ebright’s contributions to the world of science. e. Hobbies play a very important role in one’s life; elaborate this with reference to “The Making of a Scientist”

Q.3. Answer the following questions in 100-150 words each. a. Ebright’s study of monarch pupas had a far-reaching impact. Elaborate. b. Dr. Urquhart contributed significantly to Ebright’s growth as a scientist. Explain

SANT NIRANKARI PUBLIC SCHOOL WORKSHEET [AUGUST]

CLASS X BIOLOGY [HOW ORGANISMS REPRODUCE] 1. Name two plants that are grown by vegetative propagation. (CBSE 2016) 2. What is reproduction? Explain two advantages of sexual reproduction over asexual reproduction (CBSE 2016) 3. What is reproduction? Mention the importance of DNA copying in reproduction. (CBSE 2008) 4. List any two differences between pollination and fertilization. (CBSE2008) 5. Name two sexually transmitted disease caused due to infection and viral infection. How it can these be prevented? (AI 2008) 6. Explain the terms: a. Implantation b. Placenta c. What is the average duration of human pregnancy? (CBSE 2009) 7. Why is DNA copying is an essential part of the process reproduction? (AI 2009) 8. List any four methods of contraception used by humans. How does their use have a direct effect on the health and prosperity of a family? (CBSE 2015) 9. Define the terms pollination and fertilization. Draw a diagram of a pistil showing pollen tube growth into the ovule and label them: OR Describe in brief the role of (i)testis (ii) seminal vesicle, (iii) vas deferens, (iv)ureter and (v) prostate gland in human male reproductive system (CBSE 2012) 10. (a) Draw a diagram of the longitudinal section of a flower and label on it sepal, petal, ovary and stigma. (b)Write the names of male and female reproductive parts of a flower. OR (a)What is fragmentation in organisms? Name a multicellular organism which reproduces by this method. (b)What is regeneration in organism? Describe regeneration in Planaria with the help of a suitable diagram.

SANT NIRANKARI PUBLIC SCHOOL SUBJECT –SCIENCE (CHEMISTRY)

CLASS – X ASSIGNMENT -1 1. Covalent compounds have low melting and boiling point. Why?

2. How many metals are present in second period of periodic table? 3. A visually challenged student, has to perform a lab test to detect the presence of acid

in a given solution. The acid-base indicator preferred by him will be: (a) Blue litmus (b) Clove oil (c) Red cabbage extract (d) Hibiscus extract

4. An element ‘X’ with atomic number 11 forms a compound with element ‘Y’ with atomic number 8. The formula of the compound formed is (a) XY (b) X2Y (c) XY2 (d) X2Y3

5. Give reasons for the following: (i) Only one half of water molecule is shown in the formula of Plaster of Paris. (ii) Sodium hydrogen carbonate is used as an antacid. (iii) On strong heating, blue coloured copper sulphate crystals turn white.

PHYSICS

WORKSHEET 1 [ August] [ WEEK 3 ] CLASS X

Q.1 A spherical mirror produces an image of magnification -1 on a screen

placed at a distance of 50cm from the mirror.

(a) Write the type of mirror.

(b) Find the distance of the image from the object.

(c) What is the focal length?

(d) Draw the diagram to show the image formation in this case.

Q.2 A student has focused the image of a candle flame on a white screen

using a concave mirror. The situation is as given below:

Length of the flame= 1.5cm

Q.3 Focal length of the mirror = 12cm Distance of flame from the mirror=

18cm Calculate the following:

(a) Distance of the image from the mirror

(b) Length of the image

(c) If the distance between the mirror and the flame is reduced to

10cm, then what would be observed on the screen? Draw ray

diagram to justify your answer for this situation.

(a) A concave mirror produces 3 times enlarged image of an object

placed at 10cm in front of it. Calculate the focal length of the mirror.

(b) Show the formation of the image with the help of a ray diagram

when an object is placed 6cm away from the pole of the mirror.

Q.4 The refractive index of a dense flint glass is 1.65 and for alcohol it is

1.36 with respect to air. Find the refractive index of dense flint glass with

respect to alcohol.

Q.5 Calculate the power of concave lens whose focal length is 25cm.

Q.6 A convex lens produces 3 times magnified image of object. Calculate

the object distance and image distance if focal length of the image is 20cm.

WEEK III CLASS X- MATHS WORKSHEET 1 CH 5 Arithmetic progression

1. Find the sum of first 30 positive integers divisible by 6.

2. Find the sum of the first 30 positive integers divisible by 6.

3. Find the middle term of an AP:213, 205,197,……..37.

4. Which term of AP121, 117, 113………. Is its first negative term.

5. The sum of the 3rd and 7th terms of an AP is 6 and their product is

8.Find the sum of first sixteen terms of an AP.

6. Find the sum of first 25 terms of an AP whose nth term is given by

an= 2-3n.

7. If sum of first m terms of an AP is 2m2+3m, then what is its second

term?

8. The 16th term of an AP is 5 times its third term. If its 10th term is

41. Find the sum of first 15 terms.

WEEK III CLASS X- MATHS WORKSHEET 2 CH – 8 Trigonometry

1. If 𝑐𝑜𝑡𝐵 = 12

5 , 𝑝𝑟𝑜𝑣𝑒 𝑡ℎ𝑎𝑡 𝑡𝑎𝑛2𝐵 − 𝑠𝑖𝑛2𝐵 = 𝑠𝑖𝑛4𝐵. 𝑠𝑒𝑐2𝐵.

2. If 𝑠𝑖𝑛𝐴 = 12

13, 𝑓𝑖𝑛𝑑 𝑡ℎ𝑒 𝑣𝑎𝑙𝑢𝑒 𝑜𝑓:

𝑠𝑖𝑛2𝐴 − 𝑐𝑜𝑠2𝐴

2𝑠𝑖𝑛𝐴. 𝑐𝑜𝑠𝐴×

1

𝑡𝑎𝑛2𝐴

3. Evaluate:2𝑡𝑎𝑛30°

1+𝑡𝑎𝑛230°

4. 𝑠𝑖𝑛45°

𝑠𝑒𝑐60°+𝑐𝑜𝑠𝑒𝑐60°

5. 𝑠𝑖𝑛60°

𝑐𝑜𝑠245°− 𝑐𝑜𝑡30° + 15𝑐𝑜𝑠90°

6. 𝐹𝑖𝑛𝑑 𝑡ℎ𝑒 𝑣𝑎𝑙𝑢𝑒 𝑜𝑓 (𝑐𝑜𝑠𝑒𝑐𝐴 −sinA)(secA-cosA(tanA+cotA)

7. 𝑡𝑎𝑛𝐴

1−𝑐𝑜𝑡𝐴+

𝑐𝑜𝑡𝐴

1−𝑡𝑎𝑛𝐴= 1 + 𝑡𝑎𝑛𝐴 + 𝑐𝑜𝑡𝐴

8. 𝑃𝑟𝑜𝑣𝑒 𝑡ℎ𝑎𝑡: 1

𝑐𝑜𝑠𝑒𝑐𝐴−𝑐𝑜𝑡𝐴−

1

𝑠𝑖𝑛𝐴=

1

𝑠𝑖𝑛𝐴−

1

𝑐𝑜𝑠𝑒𝑐𝐴+𝑐𝑜𝑡𝐴

9. 𝑃𝑟𝑜𝑣𝑒 𝑡ℎ𝑎𝑡: √1−𝑠𝑖𝑛𝐴

1+𝑠𝑖𝑛𝐴+ √

1+𝑠𝑖𝑛𝐴

1−𝑠𝑖𝑛𝐴= −2 𝑠𝑒𝑐𝐴.

10. Prove that 𝑠𝑒𝑐4𝐴(1 − 𝑠𝑖𝑛4𝐴) − 2𝑡𝑎𝑛2𝐴 = 1

SOCIAL SCIENCE

GEOGRAPHY L- MANUFACTURING INDUSTRIES

WORKSHEET-1

WEEK-3

1.SAIL is an example of ___________ industry.

2. The first textile mill was set up at ___________ .

3. India exports jute goods to ___________ .

4. Silencers can be used to control ___________ .

5. The employees employed in the manufacturing of the car belongs to the ___________ .

6. ___________ region has the maximum concentration of iron and steel industries.

7. The sugar industry is well suited to the cooperative sector. (True/False)

8. Coir industry is an example of cooperative sector. (True/False)

9. India is the largest producer of Sponge Iron. (True/False)

10. The Dabur industry is a public sector industry. (True/False)

11. Edible oil industry is an example of the agro based industry. (True/False)

WORKSHEET-2

1. In which sector are the manufacturing industries placed?

2. State any two components through which country’s economic growth is measured?

3. What was the concept behind setting up public sector industries and joint ventures in India?

4. With what aim were industries established in the tribal and backward areas?

5. What is NMCC?

6. Which factor is considered as the most prominent one in the industrial location in a region?

7. Name the main advantages provided by cities to industries. Or Which advantage is provided by agglomeration cities to industries?

8. What are agglomeration economies?

9. Which key factors influence the location of an industry?

10. To which sector does the textile industry belong to?

11. On what basis are the small scale and large scale industries classified?

ASSIGNMENT-1 (WEEK-3) SUBJECT: COMPUTER Topic: Program Coding Level-1

1. Explain any five java data types.

2. What do you mean by object of a class?

3. Write the steps how to make a project and class in BlueJ?

4. How do we execute a program in BlueJ?

5. What do you mean by compiling java program?

ASSIGNMENT-2 (WEEK-3) SUBJECT: COMPUTER Topic: Program Coding Level-1

1. Write a program in java to print your name on the screen?

2. What is String str[] function?

3. How we can make single line and multiline comments in a program?

4. Explain the function System.out.printIn() ?

5. What are Keywords in java?