For the following reaction scheme, percentage yields are gi…

Maths JEE - Advanced Previous Year Paper JEE-Advanced-2021-Paper-1 Numeric Response

Published by: CGP EDU Academic Team

Published on: August 14, 2026

For the following reaction scheme, percentage yields are given along the arrow:

X g and y g are mass of R and U, respectively.

(Use : Molar mass (in g mol -1 ) of H, C and O as 1, 12 and 16, respectively)

(i) The value of y is___.

Text Solution

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The correct answer is:

(3.20 - 3.90)

Molar mass of 'U' = 122 g or 100 g

So, mass of 'U' = x 0.8 x 0.8 x 100 = 3.20

Mass of 'U' = x 0.8 x 0.8 x 122 = 3.90

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