Question

Assertion (A): The angle of contact of pure water with glass is acute.
Reason (R): The adhesive force between molecules of water and glass is greater than cohesive force between water molecules.

• A. Both Assertion (A) and Reason (R) are true and the Reason (R) is correct explanation of thte Assertion(A) .
• B. Both Assertion (A) and Reason (R) are true, but Reason (R) is not correct explanation of the Assertion(A) .
• C. Assertion (A) is true, but the Reason (R) is false.
• D. Assertrion (A) is false, but the Reason (R) is true.

Answer 1

The correct option is A Both Assertion (A) and Reason (R) are true and the Reason (R) is correct explanation of thte Assertion(A) .

Angle of contact between water and glass is zero.
This is because the force between glass and water are much stronger than cohesive forces between water molecules.