Solid State

Section: Chemistry

Question : 27 of 69

Marks: +1, -0

Given below are two statements. One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : Sharp glass edge becomes smooth on heating it upto its melting point.
Reason R : The viscosity of glass decreases on melting.
Choose the most appropriate answer from the options given below.

[20 Jul 2021 Shift 1]

A is true but R is false
Both A and R are true but R is NOT the correct explanation of A.
A is false but R is true.
Both A and R are true and R is the correct explanation of A.

Validate

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