A) \[{{H}_{2}}S\]
B) \[P{{H}_{3}}\]
C) \[S{{O}_{2}}\]
D) None of these
Correct Answer: B
Solution :
\[{{H}_{2}}S\to \] colourless gas with unpleasant odour of rotten eggs. \[S{{O}_{2}}\to \] colourless gas with a pungent suffocating odour \[P{{H}_{3}}\to \] colourless gas with unpleasant garlic like odour or rotten fish odour.
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