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ICSE Class 9 Chemistry Question 16 of 26

Study of the First Element — Hydrogen — Question 21

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21
Question

Question 2(x)

Assertion (A): Reduction is defined as the process of removal of oxygen from a substance or the addition of hydrogen to a substance.

Reason (R): Hydrogen is a reducing as well as an oxidising agent.

  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

A is true but R is false.

Explanation — Reduction is also defined as the process that involves removal of oxygen from a substance or the addition of hydrogen to a substance. Hence, the assertion (A) is true.
Hydrogen is a reducing agent not oxidising agent. Hence, the reason (R) is false.