ICSE Class 6 Chemistry - Introduction to Chemistry - Test 2 (Intermediate)
1. A balloon becomes bigger when air is blown into it. This shows that air:
A. Has colour
B. Has taste
C. Occupies space
2. A sponge can be compressed because it contains:
A. Air spaces
B. Only water
C. No matter
3. Oil floats on water mainly because oil is:
A. Heavier than water
B. Less dense than water
C. A solid substance
4. Milk is considered a mixture because it contains:
A. Only one pure substance
B. Only one element
C. Different substances mixed together
5. Sand and iron filings mixed together form a:
A. Mixture
B. Compound
C. Gas
6. Which method can separate iron filings from sand?
A. Filtering with cloth
B. Using a magnet
C. Heating strongly
7. Common salt is best classified as a:
A. Mixture
B. Solution only
C. Compound
8. Which one is a pure element?
A. Copper
B. Tea
C. Air
9. When salt is stirred in water, it forms:
A. A solid block
B. A salt solution
C. Pure oxygen
10. If more salt is added to the same amount of water, the solution becomes:
A. Less salty
B. Colourless gas
C. More concentrated
11. A burning candle is covered with a glass jar. After some time, the flame goes out because:
A. Oxygen becomes less inside the jar
B. The glass changes into water
C. The candle becomes heavier
12. Living beings need air mainly because it contains:
A. Sand
B. Oxygen
C. Glass
13. Carbon dioxide is used in some fire extinguishers because it:
A. Supports burning strongly
B. Turns into wood
C. Helps put out fire
14. Which apparatus is used to measure the volume of a liquid?
A. Measuring cylinder
B. Test tube brush
C. Safety goggles
15. Which apparatus is used to add a liquid in small drops?
A. Tripod stand
B. Dropper
C. Wire gauze
16. Which apparatus is used to take a small amount of solid chemical?
A. Funnel
B. Thermometer
C. Spatula
17. What should a student do if a chemical spills on the table?
A. Inform the teacher immediately
B. Touch it with bare hands
C. Taste it to identify it
18. Which of the following shows a chemical change?
A. Tearing paper
B. Cooking food
C. Melting butter
19. Freezing water into ice is a physical change because:
A. A new gas is formed
B. It becomes poisonous
C. No new substance is formed
20. Which change forms a new substance?
A. Souring of milk
B. Sharpening a pencil
C. Crushing a biscuit