Chemistry Some Basic Concepts of Chemistry Significant Figures, Units for Measurement, Matter and Separation of Mixture Single Correct MCQ
Published on: August 13, 2026

Which of the following options is not correct?

A
B
126,000 has 3 significant figures.
C
D

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Text Solution

Verified by Experts
The correct answer is:
D

Rule: The result of an addition or subtraction is reported to the same number of decimal places as present in number with the least decimal places.

Since the least precise number is 2.300 and that has three digits after the decimal, therefore the result of the above addition is rounded off to three decimal figures as 2.340.
126, ooo has 3 significant figures as zeros are not counted

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