Q. An element is common to all acids -
1) oxygen
2) hydrogen
3) sulphur
4) chlorine
Q. Which of the following is needed by a person suffering from diabetes?
1) Antibiotics
2) Insulin
3) Penicillin
4) Streptomycin
Q. Which of the following vitamins is stored in the liver?
1) Vitamin A
2) Vitamin C
3) Vitamin E
4) Vitamin K
Q. The purest form of water can be obtained from -
1) a deep tubewell
2) a running stream
3) a hot water spring
4) a heavy shower of rain
Q. Which of the following chemicals is useful in photography?
1) Aluminium hydroxide
2) Potassium nitrate
3) Silver bromide
4) Sodium chloride
Q. The volume of which of the following materials decreases when it is heated from 0° C to 5° C?
1) Air
2) Copper
3) Water
4) Mercury
Q. Vitamin B12 is most useful for combating -
1) anaemia
2) goitre
3) night blindness
4) rickets
Q. Which of the following vitamins is helpful for the coagulation of blood?
1) C
2) D
3) E
4) K
Q. A triode differs from a diode in the way that -
1) it can amplify a signal
2) it has a vacuum inside
3) it has a heated cathode
4) the photoelectric effect causes it's current
Q. Small amounts of iodine are necessary in our diet to -
1) Prevent pellagra
2) Compensate for under activity of the thyroid gland
3) stimulate clotting of blood
4) stimulate pituitary gland
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