ICSE Class 6 Chemistry - Water - Test 2 (Intermediate)
1. Why do plants need water?
A. To become stones
B. To stop growing
C. To prepare food and grow
2. Which group contains only sources of water?
A. River, lake, well
B. Stone, paper, glass
C. Iron, copper, gold
3. Ice cubes kept in a warm room become water because they:
A. Lose all matter
B. Gain heat
C. Change into salt
4. Water kept in an ice tray becomes ice because it:
A. Gains more heat
B. Becomes a gas
C. Loses heat
5. A small puddle disappears after a sunny day mainly due to:
A. Evaporation
B. Freezing
C. Rusting
6. Steam touching a cold lid forms drops of water. This is:
A. Melting
B. Condensation
C. Burning
7. What provides heat for evaporation in the water cycle?
A. Moonlight
B. Soil only
C. Sun
8. In the water cycle, rain helps water return to:
A. Earth
B. Fire
C. Metal
9. Muddy water can be made clearer by using:
A. Melting
B. Filtration
C. Burning
10. Why is water often boiled before drinking?
A. To add mud
B. To make it salty
C. To kill many germs
11. Which item can help remove insoluble impurities from water?
A. Filter paper
B. Magnet only
C. Dry cloth bag only
12. Why should pond water not be drunk directly?
A. It is always pure
B. It may contain germs and dirt
C. It contains only ice
13. Why is sea water not suitable for drinking directly?
A. It has no water
B. It is always frozen
C. It contains too much salt
14. Collecting rainwater for future use is called:
A. Rainwater harvesting
B. Water pollution
C. Boiling
15. Which action prevents wastage of water?
A. Leaving taps leaking
B. Repairing leaking taps
C. Throwing waste in rivers
16. Which activity causes water pollution?
A. Saving rainwater
B. Boiling water
C. Throwing garbage into rivers
17. Water is often called a good solvent because it can:
A. Dissolve many substances
B. Turn all substances into gold
C. Burn easily
18. When salt is mixed well with water, it forms:
A. Pure ice
B. Salt solution
C. Sand mixture only
19. In a salt solution, water acts as the:
A. Solute
B. Residue
C. Solvent
20. Why should we conserve water?
A. Clean water is limited and useful
B. Water is harmful for all living things
C. Water cannot be used by humans