Aluminium carbide on reacting with water gives

When ethyl iodide and propyl iodide react with $Na$ in the presence of ether,they form

As the number of carbon atoms in an alkane chain increases,the boiling point...........

What is the chief product obtained when $n$-butane is treated with bromine in the presence of light at $130^{\circ}C$?

Arrange the following in decreasing order of their boiling points:
$(A)$ $2-$Methylbutane
$(B)$ $2,2-$Dimethylpropane
$(C)$ Pentane
$(D)$ Hexane

The iodination of alkanes requires the use of an .......... .