General Science – 21

21. Brass gets discoloured in air because of the presence of which of the following gases in air?

(a) Oxygen
(b) Hydrogen sulphide
(c) Carbon dioxide
(d) Nitrogen

Answer

Answer : (b)

Explanation

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

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General Science » Exercise - 12. The gas usually filled in the electric bulb is : (a) nitrogen (b) hydrogen (c) carbon dioxide (d) oxygen
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General Science » Exercise - 130. The gas usually filled in the electric bulb is (a) nitrogen (b) hydrogen (c) carbon dioxide (d) oxygen
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General Science » Exercise - 184. The element common to all acids is (a) hydrogen (b) carbon (c) sulphur (d) oxygen
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