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State PCS PYQPrelims 2022

UPPCS · Question 113

Given below are two statements, one labelled as Assertion (A) and the other as Reason (R). Assertion (A): A solution of table salt in a glass of water is homogeneous. Reason (R): A solution having different composition throughout is homogeneous. Select the correct answer using the code given below.

  1. (A) is true but (R) is false
  2. Both (A) and (R) are true and (R) is the correct explanation of (A)
  3. (A) is false but (R) is true
  4. Both (A) and (R) are true but (R) is not the correct explanation of (A)
Show answer & explanation

Answer: (A) (A) is true but (R) is false

Explanation

Salt water has uniform composition, so it is homogeneous; a mixture with varying composition is heterogeneous, so R is false.