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MCQs

1. Chemistry is called a central science because:
A. It is easy to study
B. It is related to other sciences
C. It is only theoretical
D. It has no applications

2. Which of the following is NOT a product of the chemical industry?
A. Fertilisers
B. Polymers
C. Computers
D. Soaps

3. Which drug is used in cancer therapy?
A. AZT B. Cisplatin C. Paracetamol D. Insulin
4. AZT is used for the treatment of:
A. Cancer
B. Malaria
C. AIDS
D. Diabetes

5. Which gas is responsible for ozone depletion?
A. CO₂
B. Methane
C. CFCs
D. Oxygen

6. Matter is defined as anything that has:
A. Colour and taste B. Mass and occupies space C. Shape only D. Weight only
7. Which state of matter has definite shape and volume?
A. Gas
B. Liquid
C. Solid
D. Plasma

8. Liquids have:
A. Definite shape and volume
B. No shape and no volume
C. Definite volume but no definite shape
D. Definite shape but no volume

9. Gases:
A. Have fixed shape
B. Have fixed volume
C. Occupy entire container
D. Cannot move

10. Particles are far apart in:
A. Solids
B. Liquids
C. Gases
D. Plasma

11. Conversion of solid into liquid is called:
A. Freezing
B. Condensation
C. Melting
D. Sublimation

12. Conversion of gas into liquid is called:
A. Evaporation
B. Condensation
C. Freezing
D. Sublimation

13. Which has maximum particle movement?
A. Solid
B. Liquid
C. Gas
D. All equal

14. Which of the following contributes to greenhouse effect?
A. Oxygen
B. Nitrogen
C. Carbon dioxide
D. Hydrogen

15. Which of the following is an example of matter?
A. Light
B. Heat
C. Air
D. Sound