100 mL of PH₃ on decomposition produced phosphorus and hydrogen. The change in volume is [MNR 1986]

Question: 100 mL of PH₃ on decomposition produced phosphorus and hydrogen. The change in volume is [MNR 1986]

(a) 50 mL increase 

(b) 500 mL decrease

(c) 900 mL decrease 

(d) Nil.

Correct Answer: (a) 50 mL increase

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