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Question

The number of significant figures in 6.02×1023 is :

A
23
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B
3
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C
4
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D
26
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Solution

The correct option is A 3
When numbers are written in scientific notation, then the number of digits between 1 and 10 gives the number of significant figures.

Thus, the number 6.02×1023 contains 3 significant figures.

All the three digits (6,0 and 2) are significant.

Hence, option B is correct.

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