Which among the following are unsaturated hyd | vedclass

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(D) Unsaturated hydrocarbons are those that contain at least one carbon-carbon double bond $(C=C)$ or triple bond $(C \equiv C)$.$(i) H_3C - CH_2 - CH

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$(ii)$ and $(iv)$

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(D) Unsaturated hydrocarbons are those that contain at least one carbon-carbon double bond $(C=C)$ or triple bond $(C \equiv C)$.$(i) H_3C - CH_2 - CH_2 - CH_3$ is Butane,a saturated hydrocarbon (alkane).$(ii) H_3C - C \equiv C - CH_3$ is But$-2-$yne,which contains a carbon-carbon triple bond,making it unsaturated.$(iii) H_3C - CH(CH_3) - CH_3$ is Isobutane ($2$-methylpropane),a saturated hydrocarbon (alkane).$(iv) H_3C - C(CH_3) = CH_2$ is $2-$methylpropene,which contains a carbon-carbon double bond,making it unsaturated.Therefore,$(ii)$ and $(iv)$ are unsaturated hydrocarbons.

Which among the following are unsaturated hydrocarbons?
$(i) H_3C - CH_2 - CH_2 - CH_3$
$(ii) H_3C - C \equiv C - CH_3$
$(iii) H_3C - CH(CH_3) - CH_3$
$(iv) H_3C - C(CH_3) = CH_2$

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Which among the following are unsaturated hydrocarbons?$(i) H_3C - CH_2 - CH_2 - CH_3$$(ii) H_3C - C \equiv C - CH_3$$(iii) H_3C - CH(CH_3) - CH_3$$(iv) H_3C - C(CH_3) = CH_2$