Question

Select the factors that affect rusting.

• A. Coating with alloy.
• B. Coating with metal oxide.
• C. Coating with zinc.
• D. Coating with metallic paint.

Answer 1

Answer: (A), (B), (C), (D)

The correct options are
A

Coating with alloy.

B

Coating with metal oxide.

C

Coating with zinc.

D

Coating with metallic paint.

There are several factors that assist and accelerate the process of rusting. Some of them are:

Moisture: Iron exposed to rains is the most common reason.
Acid: It accelerates rusting. When exposed to acid rains, iron rusts faster. On the other hand, alkalis inhibit rusting.
Salt: Iron tends to rust faster in the sea, due to the presence of salt.
Impurity: Pure iron rusts slower than the iron mass which contains a mixture of metals.