Question

Alkanes are families of homologous with general formula CnH2n+2. Identify the correct option(s).

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Solution

The correct options are

**B** The % by mass of carbon is minimum for CH4.

**D** For heavier homologous, the % of carbon by mass is higher.

The percentage of carbon by mass in methane and ethane are 75% and 85% respectively.

The percentage by mass of carbon is minimum for CH4. Hence, the option A is incorrect and the option B is correct.

For heavier homologous, the percentage of carbon by mass is higher.. Hence, the option C is correct and D is incorrect.

The percentage of carbon by mass in methane and ethane are 75% and 85% respectively.

The percentage by mass of carbon is minimum for CH4. Hence, the option A is incorrect and the option B is correct.

For heavier homologous, the percentage of carbon by mass is higher.. Hence, the option C is correct and D is incorrect.

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