WBJEE 2021 Physics and Chemistry Solved Paper

CHEMISTRY

CATEGORY - I (Q41 to Q70)

Carry 1 mark each and only one option is correct. In case of incorrect answer or any combination of more than one answer, ¼ mark will be deducted.

Question : 63 of 80

Marks: +1, -0

A solution of NaNO3 , when treated with a mixture of Zn dust and ‘A’ yields ammonia. ‘A’ can be

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