ICSE Class 6 Chemistry - Lab Apparatus and Equipment - Test 4 (Expert)
1. A student reads the water level in a measuring cylinder from above. Why may the reading be wrong?
A. Water changes into gas
B. The reading is not taken at eye level
C. The cylinder becomes heavier
2. Why should a measuring cylinder not be used for heating water?
A. It cannot hold liquid
B. It is used only for solids
C. It may get damaged by heat
3. A teacher wants to remove water from a salt solution by heating. Which apparatus is most suitable?
A. China dish
B. Dropper
C. Test tube rack
4. In a heating setup, why is wire gauze placed below the beaker?
A. To measure the liquid
B. To support the beaker and spread heat
C. To clean the beaker
5. A beaker has to be heated safely above a burner. Which apparatus gives support to the beaker setup?
A. Dropper
B. Thermometer
C. Tripod stand
6. A test tube becomes hot during an experiment. What should be used to hold it?
A. Test tube holder
B. Bare hand
C. Measuring cylinder
7. Why is it dangerous to heat a test tube with a stopper fixed tightly on it?
A. It becomes clean automatically
B. Pressure may build up inside
C. It changes into a funnel
8. While heating a liquid in a test tube, the mouth of the test tube should be:
A. Pointed towards the face
B. Closed with the thumb
C. Pointed away from people
9. In an experiment, adding too much liquid may spoil the result. Which apparatus gives better control?
A. Dropper
B. Tripod stand
C. Test tube brush
10. A student needs a small amount of powdered chemical for an experiment. What should be used?
A. Funnel
B. Spatula
C. Thermometer
11. A liquid is being poured into a bottle with a small mouth. Which apparatus prevents spilling?
A. Watch glass
B. Wire gauze
C. Funnel
12. A beaker containing a solution is left for a short time. Which apparatus can cover it?
A. Watch glass
B. Dropper
C. Test tube holder
13. A blue solid is dissolved in water. Which apparatus helps to mix the solution evenly?
A. Test tube rack
B. Glass rod
C. Bunsen burner
14. Why should a thermometer not be used to stir a hot liquid?
A. It changes the colour of liquid
B. It measures only solids
C. It may break easily
15. Several test tubes contain different liquids. What is the safest way to keep them on the table?
A. Place them in a test tube rack
B. Lay them near the edge
C. Hold all of them in one hand
16. During mixing, a liquid may splash. Which safety item is most important for the eyes?
A. Test tube brush
B. Safety goggles
C. Wire gauze
17. Which safety item helps protect clothes from chemical drops?
A. Funnel
B. Measuring cylinder
C. Lab apron
18. If the teacher asks students to check the smell of a substance, what should they do?
A. Waft the smell gently towards the nose
B. Put the nose inside the bottle
C. Taste it first
19. A test tube slips and breaks on the floor. What should the student do first?
A. Pick the glass with bare hands
B. Inform the teacher
C. Continue the experiment silently
20. After an experiment, a stain is seen inside a test tube. Which apparatus should be used?
A. Dropper
B. Spatula
C. Test tube brush