1
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
2
JEE Main 2019 (Online) 10th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
What is the IUPAC name of the following compound ?

JEE Main 2019 (Online) 10th January Evening Slot Chemistry - Basics of Organic Chemistry Question 109 English
A
4–Bromo-3-methylpent-2-ene
B
3–Bromo 1, 2-dimethylbut-1-ene
C
3–Bromo-3-methyl-1, 2-dimethylprop-1-ene
D
2-Bromo-3-methylpent-3-ene
3
JEE Main 2019 (Online) 10th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
The increasing order of the pKa values of the following compounds is :

JEE Main 2019 (Online) 10th January Morning Slot Chemistry - Basics of Organic Chemistry Question 111 English
A
B < C < D < A
B
B < C < A < D
C
D < A < C < B
D
C < B < A < D
4
JEE Main 2019 (Online) 10th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
The decreasing order of ease of alkaline hydrolysis for the following esters in

JEE Main 2019 (Online) 10th January Morning Slot Chemistry - Basics of Organic Chemistry Question 110 English
A
III > II > IV > I
B
IV > II > III > I
C
III > II > I > IV
D
II > III > I > IV
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