Ch 14

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1. Which petroleum fraction is used as fuel for cars?

A Kerosene

B Petrol

C Bitumen

D Lubricating oil

2. The main function of fertilizers is to:

A Kill pests

B Increase soil fertility

C Control pollution

D Increase rainfall

3. Smog is a mixture of:

A Smoke and fog

B Gas and dust

C Water and oxygen

D Nitrogen and oxygen

4. The atmosphere mainly consists of:

A Oxygen

B Carbon dioxide

C Nitrogen

D Hydrogen

5. Which chemical is responsible for depletion of ozone layer?

A CO₂

B SO₂

C CFCs

D NO₂

6. The pH of acid rain is usually:

A Above 7

B Equal to 7

C Below 7

D Equal to 14

7. Which of the following is a strong base?

A NH₄OH

B NaOH

C Al(OH)₃

D Mg(OH)₂

8. Which industrial product is obtained from sulphuric acid?

A Soap

B Fertilizers

C Glass

D Cement

9. A strong acid is one that:

A Partially ionizes

B Completely ionizes

C Does not ionize

D Forms salts only

10. Chemical industries are important because they:

A Reduce population

B Increase unemployment

C Provide useful products

D Destroy environment only

Ch 14

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