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A colourless gas X forms a brown coloure...

A colourless gas `X` forms a brown coloured gas when mixed with air. The gas `X` is

A

`N_2 O`

B

`NO`

C

`NH_3`

D

`NO_2`

Text Solution

Verified by Experts

The correct Answer is:
B
`underset ("Colourless gas")(NO) + NO_2 rarr underset ("Brown coloured gas") (NO_2)`.
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