1
JEE Main 2019 (Online) 10th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of these factors does not govern the stability of a conformation in acyclic compounds?
A
Angle strain
B
Torsional strain
C
Electrostatic forces of interaction
D
Steric interactions
2
JEE Main 2019 (Online) 10th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
In chromatography, which of the following statements is incorrect for Rf ?
A
Rf value depends on the type of chromatography.
B
Higher Rf value means higher adsorption.
C
Rf value is dependent on the mobile phase.
D
The value of Rf can not be more than one.
3
JEE Main 2019 (Online) 10th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The increasing order of the reactivity of the following compounds towards electrophilic aromatic substitution reactions is : JEE Main 2019 (Online) 10th April Morning Slot Chemistry - Basics of Organic Chemistry Question 198 English
A
III < II < I
B
III < I < II
C
II < I < III
D
I < III < II
4
JEE Main 2019 (Online) 10th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The principle of column chromatography is :
A
Gravitational force.
B
Capillary action.
C
Differential adsorption of the substances on the solid phase.
D
Differential absorption of the substances on the solid phase.
JEE Main Subjects
EXAM MAP