Question

Which of the compound is an unsaturated compound.

• A. $C_6{H}_{14}$
• B. ${CH}_{3}OH$
• C. $C_3{H}_{7}OH$
• D. $C_4{H}_8$

Answer 1

The correct option is D

${\mathrm{C}}_4{\mathrm{H}}_8$

The organic compounds containing carbon atoms having double bonds or triple bonds between the adjacent carbon atoms are known as unsaturated organic compounds.

Example: Ethene $({\mathrm{CH}}_2={\mathrm{CH}}_2)$

The given organic compound is an unsaturated ${\mathrm{C}}_4{\mathrm{H}}_8$ hydrocarbon.

The general formula of alkenes is ${\mathrm{C}}_{\mathrm{n}}{\mathrm{H}}_{2\mathrm{n}}$. So, the formula of the given compound ${\mathrm{C}}_4{\mathrm{H}}_8$ becomes ${\mathrm{C}}_4{\mathrm{H}}_{2\times 4}$.

The structural formula of the given compound is ${\mathrm{CH}}_3\mathrm{CH}={\mathrm{CHCH}}_3$.

(a) The given compound ${\mathrm{C}}_6{\mathrm{H}}_{14}$ is a saturated hydrocarbon having the general formula is ${\mathrm{C}}_6{\mathrm{H}}_{2\times 6+2}$.

(b) In the given compound ${\mathrm{CH}}_3\mathrm{OH}$, the hydroxyl group replaces the hydrogen atom of the methane and is attached with a single bond. So, it is a saturated organic compound.

(c) In the given compound ${\mathrm{C}}_3{\mathrm{H}}_7\mathrm{OH}$, the hydroxyl group replaces the hydrogen atom of the propane and is attached with a single bond having the general formula is ${\mathrm{C}}_3{\mathrm{H}}_{2\times 3+2}$. So, it is a saturated organic compound.

Hence, option (D) is the correct option.