SSC MTS EXAM

Detailed explanation-1: -The boiling points of alkanes increase with increasing number of carbons. This is because the intermolecular attractive forces, although individually weak, become cumulatively more significant as the number of atoms and electrons in the molecule increases.

Detailed explanation-2: -Longer hydrocarbons have higher boiling points than shorter hydrocarbons because they form stronger intermolecular forces between hydrocarbon molecules.

Detailed explanation-3: -As the chain length (numbers of carbons) increases the melting and boiling points of the alkanes gradually increase for these compounds. The reason that longer chain molecules have higher boiling points is that longer chain molecules become wrapped around and enmeshed in each other much like the strands of spaghetti.