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1
JEE Main 2019 (Online) 12th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
An organic compound 'A' is oxidizod with Na2O2 followed by boiling with HNO3. The resultant solution is then treated with ammonium molybdate to yield a yellow precipitate.
Based on above observation, the element present in the given compound is:
A
Fluorine
B
Phosphorus
C
Nitrogen
D
Sulphur
2
JEE Main 2019 (Online) 12th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
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 91 English
A
(C) < (A) < (D) < (B)
B
(B) < (D) < (C) < (A)
C
(B) < (D) < (A) < (C)
D
(A) < (C) < (D) < (B)
3
JEE Main 2019 (Online) 10th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
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
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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