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JEE Main 2019 (Online) 12th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
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The increasing order of the pKb of the following compound is : JEE Main 2019 (Online) 12th April Morning Slot Chemistry - Basics of Organic Chemistry Question 161 English
A
(C) < (A) < (D) < (B)
B
(B) < (D) < (C) < (A)
C
(B) < (D) < (A) < (C)
D
(A) < (C) < (D) < (B)
2
JEE Main 2019 (Online) 10th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
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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 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
4
JEE Main 2019 (Online) 10th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The increasing order of nucleophilicity of the following nucleophiles is :
(a) CH3CO2$$-$$           (b) H2O
(c) CH3SO3$$-$$           (d) $$\mathop O\limits^ - H$$
A
(b) < (c) < (a) < (d)
B
(b) < (c) < (d) < (a)
C
(a) < (d) < (c) < (b)
D
(d) < (a) < (c) < (b)
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