1

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 H

_{2}SO_{4}would have been neutralized by the ammonia evolved during the analysis.Your input ____

2

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)

Your input ____

3

JEE Main 2021 (Online) 17th March Morning Shift

Numerical

+4

-1

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)

Your input ____

4

JEE Main 2021 (Online) 16th March Evening Shift

Numerical

+4

-1

In Duma's method of estimation of nitrogen, 0.1840 g of an organic compound gave 30 mL of nitrogen collected at 287 K and 758 mm of Hg pressure. The percentage composition of nitrogen in the compound is __________. (Round off to the Nearest Integer). [Given : Aqueous tension at 287 K = 14 mm of Hg]

Your input ____

Questions Asked from Practical Organic Chemistry (Numerical)

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