Question

Chemistry question answer this ​

Answer 1

Answer:

(D) Ni^2+ --- Ni.

Explanation:

☆ When there is gain in oxidation

number or loss of electrons it is

called Oxidation.

☆ When there is loss in oxidation

number or gain of electrons it is

called Reduction.

☆ Here,

• Fe^2+ --- Fe^3+ is Oxidized.

(loss of electrons).

• Zn --- Zn^2+ is Oxidized.

(loss of electrons).

• Fe --- Fe^2+ is Oxidized.

(loss of electrons).

• Ni^2+ --- Ni is reduced.

(gain of electrons).

● Ni^2+ --- Ni is a Reduction reaction

while the other three are Oxidation

reactions.