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General Chemistry – 1 – 3

11. Heavy water is :

(a) deuterium oxide
(b) PH7
(c) rain water
(d) tritium oxide

Answer
Answer : (a)

Explanation
No answer description available for this question. Let us discuss.

12. The element common to all acids is :

(a) hydrogen
(b) carbon
(c) sulphur
(d) oxygen

Answer
Answer : (a)

Explanation
No answer description available for this question. Let us discuss.

13. Carbon, diamond and graphite are together called :

(a) allotropes
(b) isomers
(c) isomorphs
(d) isotopes

Answer
Answer : (a)

Explanation
No answer description available for this question. Let us discuss.

14. Permanent hardness of water may be removed by the addition of :

(a) sodium carbonate
(b) alum
(c) potassium permanganate
(d) lime

Answer
Answer : (a)

Explanation
No answer description available for this question. Let us discuss.

15. Soda water contains :

(a) carbonic acid
(b) sulphuric acid
(c) carbon dioxide
(d) nitrous acid

Answer
Answer : (c)

Explanation
No answer description available for this question. Let us discuss.


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