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The vapour density of sample of partiall...

The vapour density of sample of partially decomposed cyclobutane `(C_(4)H_(8) )` gas is 20. The degree of dissociation of `C_(4)H_(8)` into `C_(2)H_(4)` gas is

A

0.25

B

0.5

C

0.6

D

0.4

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The correct Answer is:
D
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