1. Anaemia is caused in man due to the deficiency of —
(A) folic acid (B) vitamin A (C) vitamin B12 (D) none
2. Blood does not coagulate inside the body due to the presence of —
(A) haemoglobin (B) heparin (C) fibrin (D) plasma
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. The penetrating power is maximum in —
(A) a-rays (B) b-rays (C) g-rays (D) cathode rays
7. Antibiotics are drugs used for the cure of —
(A) Bacterial diseases (B) Cancer (C) Malaria (D) Nervous disorders
8. Which of the following rays carry no charge ?
(A) Cathode rays (B) X-rays (C) a-rays (D) Positive rays
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
Answer
1. (A) 2. (B) 3. (B) 4. (B) 5. (D) 6. (A) 7. (A) 8. (B) 9. (D) 10. (C)
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