Note : In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.
Assertion : Polyamides are best used as fibres because of high tensile strength.
Reason : Strong intermolecular forces (like hydrogen bonding within polyamides) lead to close packing of chains and increase the crystalline character, hence, provide high tensile strength to polymers.
Polyamides like nylon are best-used fibers because of high tensile strength due to the presence of the strong intermolecular forces like hydrogen bonding.
These forces strongly hold the chain of polyamides, hence, provides high tensile strength.
Thus, both the assertion and the reason are correct and the reason is the correct explanation of the assertion.