Bright Tutorials Bright Tutorials
ICSE Class 10 Chemistry Question 12 of 62

Study of Compounds — Sulphuric Acid — Question 18

Back to all questions
18
Question

Question 18

Assertion (A): Impurity of arsenic oxide must be removed before passing the mixture of SO2 and air through the catalytic chamber.

Reason (R): Arsenic oxide poisons the catalyst.

  1. Both A and R are true and R is the correct explanation of A.
  2. Both A and R are true but R is not the correct explanation of A.
  3. A is true but R is false.
  4. A is false but R is true.
Answer

Both A and R are true and R is the correct explanation of A.

Explanation— In the manufacture of sulphuric acid, purification of gases is done by removing the impurity of arsenic oxide before passing the mixture of SO2 and air through the catalytic chamber. Hence, the assertion (A) is true.
Purification of gases is done because arsenic oxide poisons the catalyst and the catalyst loses its efficiency. Hence, the reason (R) is true and it is the correct explanation of assertion (A).