MCQs on Significant figures

Quiz on Significant Figures

1. How many significant figures are in 0.00450?

2 3 4 5

Correct answer: 3

2. Which number has exactly 4 significant figures?

0.0700 7000 7.000 0.007

Correct answer: 7.000

3. Trailing zeros are significant only if:

They come before the decimal They are between two digits They are after a decimal and after a digit They come in large numbers

Correct answer: They are after a decimal and after a digit

4. How many significant figures are in 0.00720?

2 3 4 5

Correct answer: 3

5. 2.300 × 10³ has how many significant figures?

2 3 4 5

Correct answer: 4

6. Which of the following has 2 significant figures?

0.0020 20 2.0 2000

Correct answer: 2.0

7. How many significant figures are in 1001?

2 3 4 5

Correct answer: 4

8. Zeros between non-zero digits are:

Never significant Sometimes significant Always significant Only significant in decimals

Correct answer: Always significant

9. Which number has only 1 significant figure?

0.007 0.070 7.0 70.0

Correct answer: 0.007

10. In scientific notation, the number of significant figures equals:

The number of digits before the decimal All digits in the coefficient All digits after the decimal The exponent only

Correct answer: All digits in the coefficient