Question

Assertion(A): The micelle formed by sodiumm stearate in water has -COO groups at the surface.
Reason(R): Surface tension of water is reduced by addition of stearate.
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 and the reason is not the correct explanation of the assertion.
C. If assertion is true but reason is false.
D. If assertion is false but reason is true.

Answer 1

Correct Answer - B
Here both assertion and reason are correct but reason is not a correct explanation of asssertion. Micelle is formed if molecules with polar and nonpopular ends assemble in bulk to give nonpolar interior and polar exterior.