1

JEE Main 2021 (Online) 18th March Evening Shift

Numerical

+4

-1

In Tollen's test for aldehyde, the overall number of electron(s) transferred to the Tollen's reagent formula [Ag(NH

_{3})_{2}]^{+}per aldehyde group to form silver mirror is ___________. (Round off to the Nearest Integer).Your input ____

2

JEE Main 2021 (Online) 18th March Evening Shift

Numerical

+4

-1

Consider the above reaction where 6.1 g of Benzoic acid is used to get 7.8 g of m-bromo benzoic acid. The percentage yield of the product is __________

(Round off to the Nearest Integer).

[Given : Atomic masses : C : 12.0 u, H : 1.0 u, O : 16.0 u, Br : 80.0 u]

Your input ____

3

JEE Main 2021 (Online) 17th March Evening Shift

Numerical

+4

-1

The total number of C-C sigma bond/s in mesityl oxide (C

_{6}H_{10}O) is __________. (Round off to the Nearest Integer).Your input ____

4

JEE Main 2021 (Online) 25th February Evening Shift

Numerical

+4

-1

The number of compound/s given below which contain/s -COOH group is __________. (Integer answer)

(A) Sulphanilic acid

(B) Picric acid

(C) Aspirin

(D) Ascorbic acid

(A) Sulphanilic acid

(B) Picric acid

(C) Aspirin

(D) Ascorbic acid

Your input ____

Questions Asked from Aldehydes, Ketones and Carboxylic Acids (Numerical)

Number in Brackets after Paper Indicates No. of Questions

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