1
JEE Main 2019 (Online) 12th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Among the following four aromatic compounds, which one will have the lowest melting point ?
A
JEE Main 2019 (Online) 12th January Morning Slot Chemistry - Basics of Organic Chemistry Question 106 English Option 1
B
JEE Main 2019 (Online) 12th January Morning Slot Chemistry - Basics of Organic Chemistry Question 106 English Option 2
C
JEE Main 2019 (Online) 12th January Morning Slot Chemistry - Basics of Organic Chemistry Question 106 English Option 3
D
JEE Main 2019 (Online) 12th January Morning Slot Chemistry - Basics of Organic Chemistry Question 106 English Option 4
2
JEE Main 2019 (Online) 12th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
The increasing order of reactivity of the following compounds towards reaction with alkyl halides directly is JEE Main 2019 (Online) 12th January Morning Slot Chemistry - Basics of Organic Chemistry Question 105 English 1

(A)

JEE Main 2019 (Online) 12th January Morning Slot Chemistry - Basics of Organic Chemistry Question 105 English 2

(B)

JEE Main 2019 (Online) 12th January Morning Slot Chemistry - Basics of Organic Chemistry Question 105 English 3

(C)

JEE Main 2019 (Online) 12th January Morning Slot Chemistry - Basics of Organic Chemistry Question 105 English 4

(D)

A
A < B < C < D
B
B < A < C < D
C
B < A < D < C
D
A < C < D < B
3
JEE Main 2019 (Online) 11th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
In the following compound,

JEE Main 2019 (Online) 11th January Evening Slot Chemistry - Basics of Organic Chemistry Question 107 English

the favourable site/s for protonation is/are :
A
(b), (c) and (d)
B
(a) and (e)
C
(a) and (d)
D
(a)
4
JEE Main 2019 (Online) 11th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
A 10 mg effervescent tablet containing sodium bicarbonate and oxalic acid releases 0.25 ml of CO2 at T = 298.15 K and p = 1 bar. If molar volume of CO2 is 25.0 L under such condition, what is the percentage of sodium bicarbonate in each tablet ?
[Molar mass of NaHCO3 = 84 g mol–1]
A
33.6
B
0.84
C
8.4
D
16.8
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