ICSE Class 6 Physics - Physical Quantities and Measurement - Test 4 (Expert)
1. Two students measure the same desk using their handspans and get different answers. The main reason is:
A. The desk changed its length
B. Their handspans are different
C. The desk has no length
2. Why are standard units better than body parts for measurement?
A. They change from person to person
B. They make measurements more confusing
C. They give uniform measurements
3. A rod starts at 4 cm and ends at 16 cm on a ruler. The length of the rod is:
A. 12 cm
B. 16 cm
C. 20 cm
4. A student wants to measure a curved line drawn on paper. Which method is most suitable?
A. Use only a beam balance
B. Use a thread and then measure the thread
C. Use a thermometer
5. Which instrument is best for measuring the distance around a round bottle?
A. Stopwatch
B. Beam balance
C. Measuring tape
6. The thickness of 100 paper sheets is 2 cm. The thickness of one sheet is:
A. 0.02 cm
B. 2 cm
C. 100 cm
7. To measure the thickness of a thin wire more accurately, we should:
A. Guess the thickness by looking at it
B. Wind it many times around a pencil and divide the total width
C. Measure its colour with a ruler
8. Water level in a measuring cylinder is 50 mL. After a stone is placed in it, the level rises to 68 mL. The volume of the stone is:
A. 50 mL
B. 68 mL
C. 18 mL
9. A small pebble displaces 25 mL of water. Its volume is:
A. 25 cm³
B. 25 kg
C. 25 seconds
10. A matchbox has length, breadth, and height. Its volume can be found by:
A. Adding only length and breadth
B. Multiplying length, breadth, and height
C. Measuring only its colour
11. A cuboid has length 6 cm, breadth 3 cm, and height 2 cm. Its volume is:
A. 11 cm³
B. 18 cm³
C. 36 cm³
12. Before finding the volume of a cuboid, all its measurements should be in:
A. The same unit
B. Different colours
C. Seconds only
13. A student reads a measuring cylinder from above the meniscus. The reading may be wrong due to:
A. Heating error
B. Parallax error
C. Colour error
14. While measuring water in a measuring cylinder, the correct reading is usually taken from the:
A. Top rim of the cylinder
B. Highest part of the curve
C. Lowest part of the meniscus
15. A balance shows 5 g even when nothing is placed on it. This is an example of:
A. Zero error
B. Correct reading
C. Standard unit
16. What should be done before measuring the mass of an object using a balance?
A. Keep the pointer at any random mark
B. Check and adjust the pointer to zero
C. Remove all standard masses forever
17. A stopwatch reads 10 s at the start and 40 s at the end of an activity. The time taken is:
A. 10 s
B. 40 s
C. 30 s
18. Three students measure the same table length and get slightly different values. The best result can be found by:
A. Taking the average of the readings
B. Choosing only the largest reading always
C. Ignoring all readings
19. Which unit is more suitable for measuring the mass of a pencil?
A. Kilometre
B. Gram
C. Litre
20. Which practice gives the most reliable measurement?
A. Guessing the value without using an instrument
B. Reading from a slanting position quickly
C. Using the correct instrument and reading carefully