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Which of the following statement is INCORRECT for reduction?
Question

Which of the following statement is INCORRECT for reduction?

A.

Removal of oxygen

B.

Loss of electrons

C.

Gain of electrons

D.

Addition of Hydrogen

Correct option is B

The correct answer is (b) Loss of electrons.

Correct Answer Explanation:

  • Reduction is defined as the gain of electrons, the addition of hydrogen, or the removal of oxygen in a chemical reaction.
  • option (B) states "Loss of electrons,"incorrectoxidationSince this is because the loss of electrons actually represents , not reduction.
  • OIL RIGThis concept is commonly explained using the mnemonic :
    • Oxidation Is Loss (of electrons)
    • Reduction Is Gain (of electrons)

Information about Other Options:

  • (A) Removal of oxygenCorrect. Reduction can involve the removal of oxygen from a substance. For example:

                                                                                      CuO+H2→Cu+H2O

Here, CuO is reduced to Cu by losing oxygen.

  • (C) Gain of electronsCorrect. Reduction is the gain of electrons. For example, in the reaction:

                                                             Fe3++e→Fe2+

The Fe³⁺ ion gains an electron, meaning it undergoes reduction.

  • (D) Addition of HydrogenCorrect. The reduction can also mean the addition of hydrogen. For example:

C2H4+H2→C2H6

Here, C₂H₄ is reduced to C₂H₆ by adding hydrogen.

Information Booster:

Oxidation:

  • Oxidation is the process in which a substance loses electrons, or its oxidation state increases. It often involves the addition of oxygen or removal of hydrogen from a substance.

Reduction:

  • Reduction is the process in which a substance gains electrons or its oxidation state decreases. It often involves the addition of hydrogen or removal of oxygen from a substance.

These processes always occur together in a redox (reduction-oxidation) reaction.


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