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33%(00:03)   |   67%(00:03)   |   3

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

You may select 1 option

Spoiler for correct answers:

Correct Answer is:- B. Hydrogen sulphide

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General Science

Post by admin123 » Fri Mar 23, 2018 12:59 pm

Elements and Metals


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