Aluminum carbide on reaction with $D_2 O$ gives $Al(OD)_3$ and '$X$'. What is '$X$'?

The angle strain in cyclopropane is:

$A$ gaseous alkane undergoes complete combustion with oxygen. The ratio of the volume of $O_2$ required to the volume of $CO_2$ formed is $7 : 4$. The molecular formula of the alkane is:

Dry distillation of sodium propanoate with sodalime gives

Which of the following alkanes is used for road surfacing?

What is the product of the reaction between $n$-butane and bromine at $130^\circ C$?