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1. Heavy water is:

A

Deuterium oxide

B

PH7

C

Rain water

D

Tritium oxide

2. The element common to all acids is:

A

Hydrogen

B

Carbon

C

Sulphur

D

Oxygen

3. Non stick cooking utensils are coated with:

A

Black paint

B

PVC

C

Teflon

D

Polystyrene

4. Carbon, diamond and graphite are together called:

A

Allotrope

B

Isomers

C

Isomorphs

D

Isotopes

5. Potassium nitrate is used in:

A

Medicine

B

Fertilizer

C

Salt

D

Glass

6. Permanent hardness of water may be removed by the addition of:

A

Sodium Carbonate

B

Alum

C

Potassium Permanganate

D

Lime

7. Most soluble in water is:

A

Camphor

B

Sulphur

C

Common salt

D

Sugar

8. Which of the following is in liquid form at room temperature?

A

Lithium

B

Sodium

C

Francium

D

Cerium

9. Sodium metal is kept under:

A

Petrol

B

Alcohol

C

Water

D

Kerosene

10. What is laughing gas?

A

Nitrous Oxide

B

Carbon monoxide

C

Sulphur dioxide

D

Hydrogen peroxide

11. Diamond is an allotropic form of:

A

Germanium

B

Carbon

C

Silicon

D

Sulphur

12. LPG consists of mainly:

A

Methane, Ethane and Hexane

B

Ethane, Hexane and Nonane

C

Methane, Hexane and Nonane

D

Methane, Butane and Propane

13. Air is a/an:

A

Compound

B

Element

C

Electrolyte

D

Mixture

14. Balloons are filled with:

A

Nitrogen

B

Helium

C

Oxygen

D

Argon

15. Which metal pollutes the air of a big city?

A

Copper

B

Chromium

C

Lead

D

Cadmium

16. Which of the following is the lightest metal?

A

Mercury

B

Lithium

C

Lead

D

Silver

17. Water is a good solvent of ionic salts because:

A

It has a high specific heat

B

It has no colour

C

It has a high dipole moment

D

It has a high boiling point

18. Which of the following metals remain in liquid for under normal conditions?

A

Radium

B

Zinc

C

Uranium

D

Mercury

19. Which of the following is an element?

A

Ruby

B

Sapphire

C

Emerald

D

Diamond

20. What is the unit for measuring the amplitude of a sound?

A

Decibel

B

Coulomb

C

Hum

D

Cycles