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A gas (X) is obtained when copper reacts...

A gas (X) is obtained when copper reacts with dilute `HNO_(3)`. The gas thus formed reacts with oxygen to give brown fumes of (Y). (Y) when dissolved in water gives an important acid (Z) and the gas (X). X, Y and Z respectively are

A

`NO,NO_2 , HNO_3`

B

`NO_2 , NO, HNO_3`

C

`N_2O , NO, HNO_3`

D

`NO, N_2O , HNO_3`

Text Solution

Verified by Experts

The correct Answer is:
A
`3Cu+8HNO_3(dil.) to 3Cu(NO_3)_2+underset"(X)"(2NO)+ 4H_2O`
`2NO+ O_2 to underset"(Y)"(2NO_2)`
`3NO_2 + H_2O to underset"(Z)"(2HNO_3) + NO`
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