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JEE Main 202621 JanuaryMorning Shift
Exam
JEE Main
Year
2026
Date
21 January
Shift
Morning Shift
Subject
Chemistry
Chapter
Amines

JEE Main 2026 · 21 January · Morning Shift · Chemistry · Amines

Consider the following reaction sequence The percentage of nitrogen...

Consider the following reaction sequence
Consider the following reaction sequence The percentage of nitrogen in product ' T ' formed is \_\_\_\_ %. (Nearest
The percentage of nitrogen in product ' T ' formed is ____\_\_\_\_%. (Nearest integer)
(Given molar mass in gmol−1H:1,C:12, N:14,O:16\mathrm{g} \mathrm{mol}^{-1} \mathrm{H}: 1, \mathrm{C}: 12, \mathrm{~N}: 14, \mathrm{O}: 16)

Correct answer

0

Step-by-step solution

Benzene →HNO3/H2SO4\xrightarrow{HNO_3/H_2SO_4} Nitrobenzene (P) →Sn/HCl\xrightarrow{Sn/HCl} Aniline (Q) →(CH3CO)2O\xrightarrow{(CH_3CO)_2O} Acetanilide (R)
R →HNO3/H2SO4\xrightarrow{HNO_3/H_2SO_4} p-Nitroacetanilide (S) →HCl/EtOH,Δ\xrightarrow{HCl/EtOH, \Delta} p-Nitroaniline (T)
T = p-Nitroaniline (O2N−C6H4−NH2O_2N-C_6H_4-NH_2), molecular formula C6H6N2O2C_6H_6N_2O_2
Molar mass = 6(12)+6(1)+2(14)+2(16)=72+6+28+32=1386(12) + 6(1) + 2(14) + 2(16) = 72 + 6 + 28 + 32 = 138 g/mol
% N = 28138×100=20.29%\frac{28}{138} \times 100 = 20.29\%
Nearest integer = 20
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