The monomer (X) involved in the synthesis of Nylon 6,6 gives positive carbylamine test. If 10 moles of X are analyzed using Dumas method, the amount (in grams) of nitrogen gas evolved is ______.

Use: Atomic mass of N (in amu) = 14

Under hydrolytic conditions, the compounds used for preparation of linear polymer and for chain termination, respectively, are

The correct functional group X and the reagent/reaction condition Y in the following scheme are

On complete hydrogenation, natural rubber produces

Among cellulose, poly(vinyl chloride), nylon and natural rubber, the polymer in which the intermolecular force of attraction is weakest is