General Knowledge - General Science

Exercise : General Science - Elements and Metals
56.
Water is a good solvent of ionic salts because
it has a high specific heat
it has no colour
it has a high dipole moment
it has a high boiling point
Answer: Option
Explanation:
No answer description is available. Let's discuss.

57.
Which of the following is not an isotope of hydrogen?
Tritium
Deuterium
Protium
Yttrium
Answer: Option
Explanation:
http://en.wikipedia.org/wiki/Isotopes_of_hydrogen

58.
The main constituents of pearls are
calcium oxide and ammonium chloride
calcium carbonate and magnesium carbonate
aragonite and conchiolin
ammonium sulphate and sodium carbonate
Answer: Option
Explanation:
No answer description is available. Let's discuss.

59.
Amalgams are
highly coloured alloys
alloys which contain mercury as one of the contents
alloys which have great resistance to abrasion
alloys which contain carbon
Answer: Option
Explanation:
No answer description is available. Let's discuss.

60.
Which of the following is the lightest metal?
Mercury
Lithium
Lead
Silver
Answer: Option
Explanation:
No answer description is available. Let's discuss.