JEE Main 202229 JuneEvening Shift

Exam: JEE Main
Year: 2022
Date: 29 June
Shift: Evening Shift
Subject: Chemistry
Chapter: Some Basic Concepts of Chemistry

JEE Main 2022 · 29 June · Evening Shift · Chemistry · Some Basic Concepts of Chemistry

Using the rules for significant figures, the correct answer for the...

Using the rules for significant figures, the correct answer for the expression

\dfrac{0 . 02858 \times 0 . 112}{0 . 5702}

will be:

Options

A $0 . 005613$
B $0 . 00561$
C $0 . 0056$
D $0 . 006$

Correct answer

B. $0 . 00561$

Step-by-step solution

In multiplication and division, the result must be reported with no more significant figures as in the measurement with few significant figures

$\dfrac{0 . 02858 \times 0 . 112}{0 . 5702} = 0 . 000561$

(Or) Reported answer should not be more precise than the least precise term in calculations, so there should be three significant figures in reported answer.

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