1
JEE Main 2020 (Online) 3rd September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Let CNaCl and CBaSO4 be the conductances (in S) measured for saturated aqueous solutions of NaCl and BaSO4, respectively, at a temperature T. Which of the following is false?
A
Ionic mobilities of ions from both salts increase with T.
B
CNaCl(T2) > CNaCl(T1) for T2 > T1
C
CBaSO4(T2) > CBaSO4(T1) for T2 > T1
D
CNaCl >> CBaSO4 at a given T
2
JEE Main 2020 (Online) 3rd September Morning Slot
MCQ (More than One Correct Answer)
+4
-1
Change Language
Henry’s constant (in kbar) for four gases $$\alpha $$, $$\beta $$, $$\gamma $$ and $$\delta $$ in water at 298 K is given below :

$$\alpha $$ $$\beta $$ $$\gamma $$ $$\delta $$
KH 50 2 2 $$ \times $$ 10-5 0.5

(density of water = 103 kg m-3 at 298 K)
This table implies that :
A
solubility of $$\gamma $$ at 308 K is lower than at 298 K
B
The pressure of a 55.5 molal solution of $$\delta $$ is 250 bar
C
$$\alpha $$ has the highest solubility in water at a given pressure
D
The pressure of a 55.5 molal solution of $$\gamma $$ is 1 bar
3
JEE Main 2020 (Online) 3rd September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The atomic number of the element unnilennium is :
A
109
B
102
C
119
D
108
4
JEE Main 2020 (Online) 3rd September Morning Slot
MCQ (More than One Correct Answer)
+4
-1
Change Language
An organic compound [A], molecular formula C10H20O2 was hydrolyzed with dilute sulphuric acid to give a carboxylic acid [B] and an alcohol [C]. Oxidation of [C] with
CrO3 - H2SO4 produced [B]. Which of the following strucutres are not possible for [A]?
A
(CH3)3 – C – COOCH2C(CH3)3
B
CH3CH2CH2COOCH2CH2CH2CH3
C
JEE Main 2020 (Online) 3rd September Morning Slot Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 161 English Option 3
D
JEE Main 2020 (Online) 3rd September Morning Slot Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 161 English Option 4
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