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196. Table salt gets moist during rainy season because
A. sodium chloride is deliquescent.
B. sodium chloride is hygroscopic.
C. sodium chloride contains hygroscopic impurities like magnesium chloride.
D. sodium chloride contains a little quantity of sodium iodide.
Explanation:
197. Sugar syrup is used for the preservation of furits because it
A. mixes well with the fruits
B. kills the micro-organisms present in them
C. drains moisture to inhibit growth of micro - organisms
D. helps to improve their taste and flavour
Explanation:
198. Mercury is generally used in thermometers because it has a
A. high fluidity
B. high density
C. high conductivity
D. high specific heat
Explanation:
199. Insulin was discovered by
A. Alexander Flemming
B. Edmond Fischer
C. Dr. F. G. Banting
D. Joseph E. Murray
Explanation:
200. When a person enters a dark room from bright light, he cannot see anything clearly for some time. Slowly, he starts seeing things. This is because
A. the length of lens increases.
B. the iris expands.
C. the iris contracts.
D. the distance between the lens and retina increases.
Explanation:
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