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JEE Main 202124 FebruaryMorning Shift

Exam: JEE Main
Year: 2021
Date: 24 February
Shift: Morning Shift
Subject: Chemistry
Chapter: Some Basic Concepts of Chemistry

JEE Main 2021 · 24 February · Morning Shift · Chemistry · Some Basic Concepts of Chemistry

4 . 5g of compound A(M . W . = 90) was used to make 250mL of its...

4 . 5g

of compound

A\left(M . W . = 90\right)

was used to make

250mL

of its aqueous solution. The molarity of the solution in

M

is

x \times {10}^{- 1} .

The value of

x

is_____ (Rounded off to the nearest integer)

Correct answer

0

Step-by-step solution

$M = \dfrac{4 . 5 / 90}{250 / 1000} = 0 . 2$

$= 2 \times {10}^{- 1}$

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