Which of the following have the same number of significant figures? [2023]
A. 0.00253
B. 1.0003
C. 15.0
D. 163
Choose the correct answer from the options given below:
A, B and C only
B and C only
C and D only
A, C and D only
(4)
| Number | Significant figure | |
| (A) | 0.00253 | 3 |
| (B) | 1.0003 | 5 |
| (C) | 15.0 | 3 |
| (D) | 163 | 3 |
Choose the correct statements. [2025]
(A) Weight of a substance is the amount of matter present in it.
(B) Mass is the force exerted by gravity on an object.
(C) Volume is the amount of space occupied by a substance.
(D) Temperatures below 0°C are possible in Celsius scale, but in Kelvin scale negative temperature is not possible.
(E) Precision refers to the closeness of various measurements for the same quantity.
Choose the correct answer from the options given below:
(B), (C) and (D) only
(C), (D) and (E) only
(A), (B) and (C) only
(A), (D) and (E) only
(2)
Mass of a substance is the amount of matter present in it and weight of a substance is the force exerted by gravity on an object.
