ICSE Class 6 Chemistry - Introduction to Chemistry - Test 5 (Comprehensive)
1. Why do we study chemistry?
A. To understand substances and their changes
B. To study only animals
C. To draw only maps
2. Which example clearly shows matter?
A. A dream
B. A rainbow
C. Water in a bottle
3. An empty bottle is closed with a cap. What is present inside it?
A. Nothing at all
B. Air
C. Only light
4. Which object has a definite shape?
A. Metal key
B. Steam
C. Orange juice
5. Steam coming out of hot water is an example of:
A. Solid
B. Liquid only
C. Gas
6. Which of the following is an element?
A. Fruit juice
B. Aluminium
C. Sea water
7. Which statement is correct about a compound?
A. It is formed by chemical combination of elements
B. It is always separated by handpicking
C. It contains substances mixed loosely
8. Muddy water is an example of a:
A. Pure element
B. Pure compound
C. Mixture
9. Which method can separate mud from muddy water?
A. Magnetism
B. Filtration
C. Freezing only
10. Which of the following may be present in air?
A. Water vapour
B. Large stones
C. Wooden blocks
11. The gas present in the largest amount in air is:
A. Carbon dioxide
B. Oxygen
C. Nitrogen
12. A lamp needs air to keep burning because air contains:
A. Dust
B. Oxygen
C. Smoke
13. Which apparatus is used for stirring a liquid in a beaker?
A. Glass rod
B. Watch glass
C. Test tube rack
14. What is the use of a test tube rack?
A. To heat water directly
B. To measure temperature
C. To hold test tubes safely
15. Why is a lab apron worn during experiments?
A. To make chemicals hotter
B. To protect clothes and body
C. To identify the smell of chemicals
16. Which rule should be followed in a chemistry laboratory?
A. Do not eat food inside the lab
B. Taste chemicals to identify them
C. Run quickly near the tables
17. While heating a test tube, its mouth should be:
A. Pointed towards your face
B. Closed tightly with your finger
C. Pointed away from people
18. Which of the following is a chemical change?
A. Inflating a tyre
B. Burning an incense stick
C. Bending a rubber band
19. Which of the following is a physical change?
A. Crushing a tablet into powder
B. Burning dry leaves
C. Spoiling of cooked rice
20. A glass of water contains a large amount of dissolved sugar. It is called:
A. A pure element
B. A solid metal
C. A concentrated solution