What is the number of $-CH_2-$ groups present in dodecane?

How many products (including stereoisomers) are expected from the monochlorination of the following compound? (Structure: $(CH_3)_2CH-CH_2-CH_3$)

Which of the following alkanes is used for road surfacing?

What is the number of tertiary carbon atoms in a molecule of isobutane?

Explain why the boiling point and melting point of alkanes increase with an increase in molecular weight.

By $Wurtz$ reaction,a mixture of $methyl \text{ } iodide$ and $ethyl \text{ } iodide$ gives: