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Class 11
Chemistry :-Additional Questions_ Set - 1 - Some Basic Concepts Of Chemistry.

 a. How many significant figures are in each of the following numbers?
i. 003
ii. 6.02×1023
b. Round each of the following numbers to three significant figures.

Answer:

a. i. 4 (zeros in between integer are sig­nificant).
ii. 3 (The exponential term does not ad­ded to the significant figure.)
b. i. 2.30 × 104
ii. 1.24 × 103

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NCERT Chemistry Class 11

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