1
JEE Main 2021 (Online) 16th March Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following is least basic?
A
$${(C{H_3}CO)_2}\mathop N\limits^{..} H$$
B
$$(C{H_3}CO)\mathop N\limits^{..} H{C_2}{H_5}$$
C
$${({C_2}{H_5})_3}\mathop N\limits^{..} $$
D
$${({C_2}{H_5})_2}\mathop N\limits^{..} H$$
2
JEE Main 2021 (Online) 16th March Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The correct statements about H2O2 are :

(A) used in the treatment of effluents.

(B) used as both oxidising and reducing agents.

(C) the two hydroxyl groups lie in the same plane.

(D) miscible with water.

Choose the correct answer from the options given below :
A
(A), (C) and (D) only
B
(A), (B), (C) and (D)
C
(A), (B) and (D) only
D
(B), (C) and (D) only
3
JEE Main 2021 (Online) 16th March Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Ammonolysis of Alkyl halides followed by the treatment with NaOH solution can be used to prepare primary, secondary and tertiary amines. The purpose of NaOH in the reaction is :
A
to remove acidic impurities
B
to remove basic impurities
C
to activate NH3 used in the reaction
D
to increase the reactivity of alkyl halide
4
JEE Main 2021 (Online) 16th March Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
The secondary structure of protein is stabilised by:
A
Hydrogen bonding
B
glycosidic bond
C
Peptide bond
D
van der Waals forces
JEE Main Papers
2023
2021
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
CBSE
Class 12