The number of significant figures in 2540 L is:

Question

Question

This question was previously asked in

DSSSB PGT Chemistry (Female) Official Paper (Held On: 06 Jul, 2018 Shift 1)

Answer 1

CONCEPT:

Significant Figures

Significant figures are the digits in a number that carry meaningful information about its precision.
Rules for identifying significant figures:
- All non-zero digits are significant.
- Zeros between significant digits are significant.
- Leading zeros (zeros before non-zero digits) are not significant.
- Trailing zeros (zeros at the end) are significant only if there is a decimal point in the number.

EXPLANATION:

The given number is 2540 L.
In this case:
- The digits 2, 5, and 4 are non-zero, so they are significant.
- The trailing zero (0) is not significant because there is no decimal point in the number.
Therefore, the number of significant figures in 2540 L is 3.

Therefore, the correct answer is Option 1: 3 significant figures.