1
JEE Main 2021 (Online) 27th July Morning Shift
Numerical
+4
-1
An organic compound is subjected to chlorination to get compound A using 5.0 g of chlorine. When 0.5 g of compound A is reacted with AgNO3 [Carius Method], the percentage of chlorine in compound A is ____________ when it forms 0.3849 g of AgCl. (Round off to the Nearest Integer)

(Atomic masses of Ag and Cl are 107.87 and 35.5 respectively)
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2
JEE Main 2021 (Online) 25th July Evening Shift
Numerical
+4
-1
0.8 g of an organic compound was analyzed by Kjeldahl's method for the estimation of nitrogen. If the percentage of nitrogen in the compound was found to be 42%, then ______________ mL of 1 M H2SO4 would have been neutralized by the ammonia evolved during the analysis.
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3
JEE Main 2021 (Online) 22th July Evening Shift
Numerical
+4
-1
Methylation of 10 g of benzene gave 9.2 g of toluene. Calculate the percentage yield of toluene __________. (Nearest integer)
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4
JEE Main 2021 (Online) 17th March Morning Shift
Numerical
+4
-1
JEE Main 2021 (Online) 17th March Morning Shift Chemistry - Practical Organic Chemistry Question 50 English
In the above reaction, 3.9 g of benzene on nitration gives 4.92 g of nitrobenzene. The percentage yield of nitrobenzene in the above reaction is ________%. (Round off to the Nearest Integer).

(Given atomic mass : C : 12.0 u, H : 1.0 u, O : 16.0 u, N : 14.0 u)
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