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A colourless gas with the smell of rottenn fish is
A. `H_(2)S`
B. `PH_(3)`
C. `SO_(2)`
D. None of these

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Correct Answer - B
`H_(2)Sto`colourless gas with unpleasant odour of rotten eggs.
`SO_(2)to` colourless gas with a pungent suffocating odour.
`PH_(3)to` colourless gas with unpleasant garlic like odour or rotten fish odour.

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