Question

Assertion (A) – The crystallization method is used to purify solids.
Reason ( R) – Evaporation technique is better than crystallization.
(A) Both (A) and (R) are true and (R) is the correct explanation of the assertion.
(B) Both (A) and (R) are true and (R) is not the correct explanation of the assertion.
(C) (A) is true but(R) is false
(D) (A) is false but (R) is true.

Answer 1

Answer:

(A) Both Assertion (A) And Reason (R) Are True And Reason (R) Is The Correct Explanation Of Assertion (A)

Answer 2

Answer:

(C) (A) is true but(R) is false

Explanation:

Assertion is true, crystallisation is a technique that has long been used in the purification of substances. Often, when a solid substance (single compound) is placed in a liquid, it dissolves.

Reason is false, crystallisation is better than evaporation because during Evaporation. Some solids decompose or some, like sugar, may get charred on heating to dryness.