CTET Science Sample Paper

CBSE PHYSICS

1. The penetrating power is maximum in —
(A) a-rays
(B) b-rays
(C) g-rays
(D) cathode rays

2. Which of the following rays carry no charge ?
(A) Cathode rays
(B) X-rays
(C) a-rays
(D) Positive rays

3. An atom bomb is based on the principle of —
(A) Chemical reaction
(B) Chain reaction in the form of fission
(C) Nuclear fusion
(D) None

4. A plant cell differs from an animal cell in the absence of —
(A) mitochondria
(B) centrioles
(C) ribosomes
(D) endoplasmic reticulum

5. A Vitamin, the absence of which leads to sterility in both males and females is —
(A) Vitamin K
(B) Vitamin C or ascorbic acid
(C) Vitamin D or calciferol
(D) Vitamin E or tocopherol

6. Anaemia is caused in man due to the deficiency of —
(A) folic acid
(B) vitamin A
(C) vitamin B₁₂
(D) none

7. Antibiotics are drugs used for the cure of —
(A) Bacterial diseases
(B) Cancer
(C) Malaria
(D) Nervous disorders

8. Blood does not coagulate inside the body due to the presence of —
(A) haemoglobin 
(B) heparin
(C) fibrin
(D) plasma

9. Blood pressure is dependent on —
(A) systolic force
(B) cardiac output
(C) peripheral resistance
(D) all of these

10. Which of the following substances undergoes chemical change on heating ?
(A) Sodium chloride
(B) Silica
(C) Lead nitrate
(D) Platinum wire

11. Vulcanisation is a —
(A) Science of studying volcanoes
(B) method of degrade polymers
(C) Process connected with the making of voltaic cells
(D) Process of hardening of rubber by heating it with sulphur.

12. Water gas is prepared by passing —
(A) steam over white-hot coke
(B) air over red-hot coke
(C) methane over red-hot coke
(D) steam over heated sulphur

13. Which of the following gases is obtained by the reaction of water with calcium carbide —
(A) Acetylene 
(B) Ethylene
(C) Methane
(D) Water gas

14. Cooking oil can be converted into vegetable ghee by the process of —
(A) oxidation
(B) hydrogenation
(C) distillation
(D) crystalisation

15. The contact process is involved in the manufacture of —
(A) nitric acid
(B) Sulphuric acid
(C) Ammonia
(D) Caustic soda

16. Polythene is industrially prepared by the polymerisation of —
(A) methane
(B) styrene
(C) acetylene
(D) ethylene

17. Combustion is a process by which —
(A) heat is produced
(B) light is produced
(C) heat and light both are produced
(D) None of these

18. PVC is obtained by the polymerisation of —
(A) propane
(B) vinyl chloride
(C) styrene
(D) Acetylene

19. The process by which an organic compound breaks down into simpler compounds on heating to high temperature is known as —
(A) Aromatisation
(B) Polymerisation
(C) Pyrolysis
(D) Reduction

20. The hydrogenation of the vegetables oils takes place in the presence of finely divided —
(A) aluminium 
(B) charcoal
(C) silica
(D) nickel

21. In which of the following processes light energy is converted into chemical energy ?
(A) Respiration
(B) Fermentation
(C) Photosynthesis
(D) Photorespiration

22. Rusting of iron involves —
(A) oxidation
(B) reduction
(C) decomposition
(D) displacement

23. LPG contains —
(A) Butane and isobutene
(B) Butane and Propane
(C) Isobutane and Propane
(D) Butane, Isobutane and Propane

24. The hormone which stimulates milk production in mammal is known as —
(A) Glucagon
(B) prolactin
(C) progesterone
(D) oestrogen

25. Antidiuretic hormone (ADH) —
(A) inhibits the secretion of growth hormone by the pituitary
(B) inhibits the rate of heart beat
(C) causes the muscular walls of the arterioles to contract that simulates the reabsorption of water from the kidney tubules.
(D) causes an increase in the blood pressure

Answers:
1. (A) 2. (B) 3. (B) 4. (B) 5. (D) 6. (A) 7. (A) 8. (B) 9. (D) 10. (C)
11. (D) 12. (A) 13. (A) 14. (B) 15. (B) 16. (D) 17. (C) 18. (B) 19. (C) 20. (D)

21. (C) 22. (A) 23. (B) 24. (B) 25. (C)