JEE Main 202117 MarchMorning Shift

Exam: JEE Main
Year: 2021
Date: 17 March
Shift: Morning Shift
Subject: Chemistry
Chapter: Some Basic Concepts of Chemistry

JEE Main 2021 · 17 March · Morning Shift · Chemistry · Some Basic Concepts of Chemistry

In the above reaction, 3 . 9g of benzene on nitration gives 4 . 92g...

In the above reaction, 3 . 9g of benzene on nitration gives 4 . 92g of nitrobenzene. The percentage yield of

In the above reaction, $3 . 9g$ of benzene on nitration gives $4 . 92g$ of nitrobenzene. The percentage yield of nitrobenzene in the above reaction is _________ $%$ . (Round off to the Nearest Integer).

(Given atomic mass : $C: 12 . 0u, H: 1 . 0u$ $O: 16 . 0u, N: 14 . 0u$ )

Correct answer

Step-by-step solution

In the above reaction, 3 . 9g of benzene on nitration gives 4 . 92g of nitrobenzene. The percentage yield of

$3 . 9gm\dfrac{123}{78} \times 3 . 9 = 6 . 15gm$

But actual amount of nitrobenzene formed is $4 . 92gm$ and hence.

Percentage yield $= \dfrac{4 . 92}{6 . 15} \times 100 = 80 %$

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