Define corrosion.

Important Questions on Metals and Non-Metals

HARD

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 3 - Metals and Non-Metals>PAPER - PEN TEST : 9>Q 9

Explain an activity to show that air and water are necessary for rusting to take place.

HARD

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 3 - Metals and Non-Metals>PAPER - PEN TEST : 9>Q 10

What happens when copper articles remain exposed to air for a considerable time? Give reaction involved.

MEDIUM

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 3 - Metals and Non-Metals>PAPER - PEN TEST : 9>Q 11

Does the copper regain its colour after getting corroded? How?

EASY

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 3 - Metals and Non-Metals>PAPER - PEN TEST : 9>Q 12

How zinc protects iron from rusting?

MEDIUM

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 3 - Metals and Non-Metals>PAPER - PEN TEST : 9>Q 13

Why silver anklets lose their shine and become dull and gradually turn black? Give reaction involved.

MEDIUM

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 3 - Metals and Non-Metals>PAPER - PEN TEST : 9>Q 14

How the corrosion takes place in aluminium articles?

EASY

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 3 - Metals and Non-Metals>PAPER - PEN TEST : 9>Q 15

How corrosion of aluminium prevented?

MEDIUM

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 3 - Metals and Non-Metals>PAPER - PEN TEST : 9>Q 16

What is rust? How is it formed?