The boiling point of CCl₄ is higher than that of CHCl₃ because

CH₄ < CH₃Cl< CH₂Cl₂ <CHCl₃ < CCl₄
As the size of the molecule (or) as molecular weight increases the surface area increases vanderwaal's (or) intermolecular force of attraction increases. Therefore in order to break up those attractions we need to provide high amount of energy (heat) in the form of B.Pt
$\therefore$ B.pt increases