10th Science Revision Test Question Paper - 2022

 Chengalpattu District

Second Assessment test - 2022

10th - Science

Time Allowed: 3.00hrs 

Max.Marks: 75

Instructions: (1) Check the question paper for fairness of printing.

(2) Use Blue or Black ink to write and underline and pencil to draw diagram.

Part - I

Note: (1) All Questions are compulsory 12 × 1 = 12

(2) Choose the most appropriate answer form the given four alternatives and write the option code and the corresponding answer.

1. Newton’s III law is applicable

a) For a body is at rest

b) For a body in motion

c) Both a and b

d) Only for bodies with equal masses

2. The unit of ‘g’ is ms-2. It can be also expressed as

a) cm s-1

b) Nkg-1

c) Nm2kg-1

d) cm2s-2

3. To project the rockets which of the following principle(s) is/(are) required?

a) Newton’s III law of motion

b) Newton’s law of gravitation

c) Law of conservation of linear momentum

d) Both a and c

4. Where should an object be placed so that a real and inverted image of same size is obtained by a convex lens?

a) f

b) 2f

c) Infinity

d) Between f and 2f

5. A small bulb is placed at the principal focus of a convex lens. When the bulb is switched on the lens will produce

a) A convergent beam of light

b) A divergent beam of light

c) A parallel beam of light

d) A coloured beam of light

6. The eye defect ‘presbyopia’ can be corrected by

a) Convex lens

b) Concave lens

c) Convex mirror

d) Bifocal lenses

7. Which of the following has the smallest mass?

a) 6.023 x 1023 atoms of He

b) 1 atom of He

c) 2gm of He

d) 1 mole atoms of He

8. Which of the following is a tri atomic molecule?

a) Glucose

b) Helium

c) Carbon dioxide

d) Hydrogen

9. The volume occupied by 4.4 gm of CO2 at S.T.P

a) 22.4 litre

b) 2.24 litre

c) 0.24 litre

d) 0.1 litre

10.Casparian strips are present in the--------------- of the root

a) Cortex

b) Pith

c) Pericycle

d) Endodermis

11.Kreb’s cycle takes place in

a) Chloroplast

b) Mitochondrial matrix

c) Stomata

d) Inner mitochondrial membrane

12. Oxygen is produced at what point during photosynthesis?

a) When ATP is converted to ADP

b) When CO2 is fixed

c) When H2O is split

d) All of these

PART - II

II. Answer any 7 questions. Question No 22 is compulsory 7 x 2 = 14

13. Define inertia. Give its classification

14. State Newton’s II law

15. Differentiate mass and weight

16. Fill in the blanks

a. The path of the light is called as ---------------

b. Amount of light entering into the eye is controlled by ---------------

17. State whether the following statements are true or false. Correct the statements if it is false.

a. Increase in the converging power of eye lens cause ‘hypermetropia’

18. What is the power of accommodation of eye?

19. Define atomicity.

20. What is photosynthesis and where in a cell does it occur?

21. Name three basic tissue system in flowering plants?

22. How many grams are there in the following?

i. 2 moles of hydrogen molecule, H2

ii. 5 moles of Sulphur molecule, S8

PART- III

III. Answer any 7 questions. Question No 32 is compulsory 7 x 4 = 28

23. Describe rocket propulsion.

24. “Wearing helmet and fastening the seat belt is highly recommended for safe journey”. Justify your answer using Newton’s laws of motion.

25. Explain the rules for obtaining images formed by a convex lens with the help of ray diagram

26. a. Write applications of convex lens and concave lens

b. Differentiate concave lens and convex lens

27.Write applications of Avogadro’s law.

28. a. Define: Relative atomic mass

b. Differentiate atoms and molecules

29. a. Write the reaction for photosynthesis.

 b. Differentiate aerobic and anaerobic respiration

30.Write a short note on mesophyll

31.a. What is collateral vascular bundle

b. Give an account on vascular bundle of dicot stem.

32.An object is placed at a distance 20cm from a convex lens of focal length 10cm. Find the image distance and nature of the image.

PART – IV

Answer all the questions. Draw diagram wherever necessary 3 x 7 = 21

33. a) Deduce the equation of a force using Newton’s II law of motion.

(or)

b) Explain in detail about structure of a human eye with neat labeled diagram

34. a) Calculate the number of moles in

 i) 27g of Al

 ii) 1.51 x 1023 molecules of NH4Cl

(or)

 b) Give the salient features of ‘modern atomic theory’

35. a) Describe and name three stages of cellular respiration that aerobic organisms use to obtain energy from glucose

(or)

b) How does the light dependent reaction differ from the light independent reaction?What are the end products and reactants in each? Where does each reaction occur within the chloroplast?