JEE Main · 2023 · 08 Apr 2023 · Shift 2 · Some Basic Concepts of Chemistry

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Which of the following have same number of significant figures ?
(A) 0.00253
(B) 1.0003
(C) 15.0
(D) 163

Choose the correct answer from the options given below

(A)A, B and C only
(B)C and D only
(C)A, C and D only✓ Correct
(D)B and C only

Answer: (C)

Solution

Significant figures are counted by ignoring leading zeros and counting all other digits, with trailing zeros after a decimal point being significant. The value

0.00253

has three significant figures,

1.0003

has five,

15.0

has three and

163

has three. The numbers that share the same count of three significant figures are

0.00253

15.0

and

163

JEE Main · 2023 · 08 Apr 2023 · Shift 2 · Single correct option

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