List the physical properties of oxygen.

Important Questions on Air and Atmosphere

MEDIUM

7th ICSE

IMPORTANT

FRANK NEW CERTIFICATE - Chemistry>Chapter 8 - Air and Atmosphere>EVALUATION>Q 3

Write three differences between combustion and rusting.

MEDIUM

7th ICSE

IMPORTANT

FRANK NEW CERTIFICATE - Chemistry>Chapter 8 - Air and Atmosphere>EVALUATION>Q 4

Write the word equations and chemical reactions for the reactions of potassium, phosphorus, sulphur and calcium with oxygen.

MEDIUM

7th ICSE

IMPORTANT

FRANK NEW CERTIFICATE - Chemistry>Chapter 8 - Air and Atmosphere>EVALUATION>Q 5

How can oxygen be prepared from potassium chlorate?

MEDIUM

7th ICSE

IMPORTANT

FRANK NEW CERTIFICATE - Chemistry>Chapter 8 - Air and Atmosphere>EVALUATION>Q 1

What is air pollution? Write the names of three air pollutants with their effects.

HARD

7th ICSE

IMPORTANT

FRANK NEW CERTIFICATE - Chemistry>Chapter 8 - Air and Atmosphere>EVALUATION>Q 2

How do human activities cause air pollution?

HARD

7th ICSE

IMPORTANT

FRANK NEW CERTIFICATE - Chemistry>Chapter 8 - Air and Atmosphere>EVALUATION>Q 3

Explain acid rain. Write four harmful effects of acid rain.

MEDIUM

7th ICSE

IMPORTANT

FRANK NEW CERTIFICATE - Chemistry>Chapter 8 - Air and Atmosphere>EVALUATION>Q 4

List any five uses of nitrogen gas.

HARD

7th ICSE

IMPORTANT

FRANK NEW CERTIFICATE - Chemistry>Chapter 8 - Air and Atmosphere>EVALUATION>Q 5

Explain how oxygen can be prepared from hydrogen peroxide with the help of an activity. Write the balanced chemical equation for the reaction.