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1
JEE Main 2021 (Online) 18th March Morning Shift
MCQ (Single Correct Answer)
+4
-1
Compound with molecular formula C3H6O can show :
A
Positional isomerism
B
Both positional isomerism and metamerism
C
Metamerism
D
Functional group isomerism
2
JEE Main 2021 (Online) 17th March Morning Shift
MCQ (Single Correct Answer)
+4
-1
Which of the following is an aromatic compound?
A
JEE Main 2021 (Online) 17th March Morning Shift Chemistry - Basics of Organic Chemistry Question 58 English Option 1
B
JEE Main 2021 (Online) 17th March Morning Shift Chemistry - Basics of Organic Chemistry Question 58 English Option 2
C
JEE Main 2021 (Online) 17th March Morning Shift Chemistry - Basics of Organic Chemistry Question 58 English Option 3
D
JEE Main 2021 (Online) 17th March Morning Shift Chemistry - Basics of Organic Chemistry Question 58 English Option 4
3
JEE Main 2021 (Online) 16th March Evening Shift
MCQ (Single Correct Answer)
+4
-1
Match List - I with List - II :

List - I
Test/Reagents/Observation(s)		 List - II
Species detected
(a) Lassaigne's Test (i) Carbon
(b) Cu(II) oxide (ii) Sulphur
(c) Silver nitrate (iii) N, S, P, and halogen
(d) The sodium fusion extract
gives black precipitate with
acetic acid and lead acetate		 (iv) Halogen Specifically


The correct match is :
A
(a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)
B
(a)-(i), (b)-(iv), (c)-(iii), (d)-(ii)
C
(a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
D
(a)-(i), (b)-(ii), (c)-(iv), (d)-(iii)
4
JEE Main 2021 (Online) 16th March Evening Shift
MCQ (Single Correct Answer)
+4
-1
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
$${({C_2}{H_5})_2}\mathop N\limits^{..} H$$
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