Question

Which of the following helps to prevent corrosion?

• A. Zinc
• B. Sulphur
• C. Aluminium
• D. Mercury

Answer 1

The correct option is A

Zinc

Explanation for the correct option:

Corrosion:

• Some metals react with oxygen and the moisture present in the atmosphere.
• Metal + Oxygen + Moisture $\to$corrosion
• Example- Silver object becomes black and loses their shine.

(A) Zinc:

• It is used to protect the iron from rusting.
• Coating of zinc on iron is called galvanisation.

Explanation for the incorrect option:

(B) Sulphur- It is non-metal and used to prevent corrosion.

(C) Aluminium- It is a metal that corrodes when comes in contact with oxygen and moisture.

(D) Mercury- It is a metal that presents in a liquid state and doesn't prevent corrosion.

Hence, option (A) i.e, zinc helps to prevent corrosion