1.

The decreasing order of bond angles in ethane, ethylene, acetylene and benzene is

Answer»

`C_(2)H_(6)gtC_(2)H_(4)gtC_(2)H_(2)gtC_(6)H_(6)`
`C_(2)H_(6)gtC_(2)H_(4)=C_(2)H_(2)gtC_(6)H_(6)`
`C_(2)H_(2)gtC_(2)H_(4)=C_(6)H_(6)gtC_(2)H_(6)`
`C_(6)H_(6)gtC_(2)H_(2)gtC_(2)H_(4)gtC_(2)H_(6)`

ANSWER :C


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