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)
(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)
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