1. Rounding off 36.897 up to 4 significant figures
(a) 36.87 (b) 36.88
(c) 36.08 (d) 36.78
2. Rounding off 1.0084 up to 4 significant figures
(a) 1.000 (b) 1.008
(c) 1.080 (d) 1.009
3. Rounding off 4.996×105 up to 3 significant figures
(a) 4.98×105 (b) 5.00×105
(c) 4.99×105 (d) 4.90×105
4. The area of a square is 5.29 cm2. The area of 7 such squares taking into account the significant figures is :-
(a) 37.0 cm2
(b) 37 cm2
(c) 37.030 cm2
(d) 37.03 cm2
5. The respective number of significant figures for the numbers 23.023, 0.0003 and 2.1 × 10–3 are
(a) 5, 1, 2
(b) 5, 1, 5
(c) 4, 4, 3
(d) 5, 4, 5
6. Add 897+0.4382 in regards to significant figure.
(a) 897.4
(b) 897.0
(c) 897
(d) 897.4382
7. How many significant figure in
(a) 3 (b) 4 (c) 5 (d) 1
8. How many significant figure in 4200kg
(a) 2 (b) 3 (c) 4 (d) 5
9. Which of the following length is most accurate
(a) 5.00m (b) 5.0 m
(c) 5.000m (d) 5 m
10. Rounding off 3.450 up to 2 significant figures
(a) 3.40 (b) 3.4
(c) 3.5 (d) 3.50
11. The number of significant figures in 0.002305 is
(a) 6 (b) 4
(c) 7 (d) 2
12. One nanometer is equivalent to
(a) 10-10 m (b)10-9 m
(c) 10-12 m (d)10-6 m
13. One Gigameter is equivalent to
(a) 1010 m (b)109 m
(c) 1012 m (d)106 m
14. The density of a liquid is 13.6 g cm-3. Its value in S.I. is
(a) 13.6 kgm-3
(b) 136 kgm-3
(c) 13600 kgm-3
(d) 1360 kgm-3
15. The value of 0.98 – 0.989 with regard to the significant digit will be:
(a) 0.001
(b) 0.010 × 10-1
(c) 0.01 × 10-1
(d) None of these
16. What is the number of significant figures in (3.20 + 4.80) × 105?
(a) 2 (b) 3
(c) 4 (d) 5
17. Which of the following numerical values has three significant figures?
(a) 5.055 (b) 0.050
(c) 50.50 (d) 0.500
18. The diameter of a sphere is 2.78m. Calculate the volume with regards to significant figure
(a) 11.30 m3 (b) 11.3 m3
(c) 11.300 m3 (d) 113 m3
19. How many significant figure in 34.000
(a) 2 (b) 3 (c) 4 (d) 5
20. A body of mass m = 3.513 kg is moving along the x-axis with a speed of 5.00 ms−1. The magnitude of its momentum is recorded as
(a) 17.6 kg ms-1
(b) 17.565 kg ms-1
(c) 17.56 kg ms-1
(d) 17.57 kg ms-1
21. How many significant figure in 34.5×104
(a) 2 (b) 3 (c) 4 (d) 5
22. How many significant figure in 0.02340
(a) 2 (b) 3 (c) 4 (d) 5
23. Match List I with List II
| List I (Numbers) | List II (Significant Figures) |
| A. 1001 | I. 3 |
| B. 010.1 | II.4 |
| C. 100.100 | III. 5 |
| D. 0.0010010 | IV. 6 |
(a) A-I, B-II, C-III, D-IV
(b) A-I, B-IV, C-III, D-II
(c) A-II, B-III, C-IV, D-I
(d) A-II, B-I, C-IV, D-III