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Q.

The number of significant figures in No=6.022 x 1023 i.e., Avogadro's number is

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a

Can be any of these

b

3

c

4

d

5

answer is B.

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Detailed Solution

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 of significant figures in 6. 022 × 1023 is 4.

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