56.
Water is a good solvent of ionic salts because
A. it has a high specific heat
B. it has no colour
C. it has a high dipole moment
D. it has a high boiling point
Answer & Explanation
Answer: Option C
Explanation:
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57.
Which of the following is not an isotope of hydrogen?
A. Tritium B. Deuterium
C. Protium D. Yttrium
Answer & Explanation
Answer: Option D
Explanation:
http://en.wikipedia.org/wiki/Isotopes_of_hydrogen
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58.
The main constituents of pearls are
A. calcium oxide and ammonium chloride
B. calcium carbonate and magnesium carbonate
C. aragonite and conchiolin
D. ammonium sulphate and sodium carbonate
Answer & Explanation
Answer: Option B
Explanation:
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59.
Amalgams are
A. highly coloured alloys
B. alloys which contain mercury as one of the contents
C. alloys which have great resistance to abrasion
D. alloys which contain carbon
Answer & Explanation
Answer: Option B
Explanation:
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60.
Which of the following is the lightest metal?
A. Mercury B. Lithium
C. Lead D. Silver
Answer & Explanation
Answer: Option B
Explanation:
No answer description available for this question.