1
JEE Main 2021 (Online) 25th February Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
The major product of the following chemical reaction is :

JEE Main 2021 (Online) 25th February Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 129 English
A
$$C{H_3}C{H_2}CHO$$
B
$$C{H_3}C{H_2}C{H_3}$$
C
$$C{H_3}C{H_2}C{H_2}OH$$
D
$${(C{H_3}C{H_2}CO)_2}O$$
2
JEE Main 2021 (Online) 25th February Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
In which of the following pairs, the outer most electronic configuration will be the same?
A
Cr+ and Mn2+
B
Ni2+ and Cu+
C
V2+ and Cr+
D
Fe2+ and Co+
3
JEE Main 2021 (Online) 25th February Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following reaction/s will not give p-aminoazobenzene?

JEE Main 2021 (Online) 25th February Morning Shift Chemistry - Compounds Containing Nitrogen Question 135 English
A
C only
B
A only
C
A and B
D
B only
4
JEE Main 2021 (Online) 25th February Morning Shift
Numerical
+4
-1
Change Language
Using the provided information in the following paper chromatogram :

JEE Main 2021 (Online) 25th February Morning Shift Chemistry - Basics of Organic Chemistry Question 143 English
Fig : Paper chromatography for compounds A and B.

the calculated Rf value of A ________$$\times$$ 10-1.
Your input ____
JEE Main Papers
2023
2021
EXAM MAP
Medical
NEETAIIMS
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12