By signing in you confirm you are 18 or older, or have your parent’s or guardian’s consent.

NDA 1 2025 GAT, question 83

Topic: Chemistry

Q83

Which one of the following statements regarding oxidation and reduction reactions is NOT correct?

  1. (a) If a substance loses hydrogen during reaction, it is reducedCorrect answer
  2. (b) If a substance loses oxygen during reaction, it is reduced
  3. (c) If a substance gains hydrogen during reaction, it is reduced
  4. (d) If a substance gains oxygen during reaction, it is oxidized

Solution.

Answer: (a) If a substance loses hydrogen during reaction, it is reduced

  1. Loss of hydrogen is oxidation, not reduction.
  2. In the school oxygen/hydrogen description, reduction is gain of hydrogen or loss of oxygen, while oxidation is loss of hydrogen or gain of oxygen.
  3. Therefore only (a) is reversed.