Question

$I$. The formulas of ethane, ethyne and ethene are $C_2{H}_6,C_2{H}_4$ and $C_2{H}_2$.

Because :

$II$. Alkanes contain only $C-C$ and $C-H$ bonds, alkenes may contain triple bonds between carbon atoms and alkynes may contain double bonds between carbon atoms.

• A. Statement $I$ is true, Statement $II$ is true
• B. Statement $I$ is true, Statement $II$ is false
• C. Statement $I$ is false, Statement $II$ is true
• D. Statement $I$ is false, Statement $II$ is false
• E. Statement $I$ is true, Statement $II$ is true and is a correct explanation of the phenomena described in $I$

Answer 1

Answer: (D)

Statement $I$ is false, Statement $II$ is false

Alkanes- contains single bonds.

Alkene - contains double bonds.

Alkyne - contains triple bonds.

The formulas of ethane, ethyne and ethene are $C_2{H}_6,C_2{H}_2$ and $C_2{H}_4$.

Hence the correct option is D.