Aluminium carbide on reacting with water gives

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

What is the condition to obtain $C_2H_5Cl$ in excess?

Which of the following has the highest boiling point?

$A$ hydrocarbon of molecular mass $72 \ g \ mol^{-1}$ gives a single monochloro derivative and two dichloro derivatives on photochlorination. Give the structure of the hydrocarbon.

$A$ hydrocarbon $C_{5}H_{10}$ does not react with chlorine in the dark but gives a single monochloro compound $C_{5}H_{9}Cl$ in bright sunlight. Identify the hydrocarbon.