Question

Assertion: Teflon has high thermal stability and chemical inertness.
Reason: Teflon is a thermoplastic.

• A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
• B. If both assertion and reason are true but reason is not the correct explanation of the assertion.
• C. If the assertion and reason both are false.
• D. If assertion is false but reason is true.

Answer 1

The correct option is B

If both assertion and reason are true but reason is not the correct explanation of the assertion.

Due to the presence of strong C–F bonds teflon has high thermal stability and chemical inertness.
And it is true that it is a thermoplastic. It changes shape on heating and retains the shape. It cannot be reshaped on further heating.
So, it is true that it is chemically inert but not because it is a thermoplastic.