1
JEE Main 2020 (Online) 3rd September Morning Slot
Numerical
+4
-0
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The mole fraction of glucose (C6H12O6 ) in an aqueous binary solution is 0.1. The mass percentage of water in it, to the nearest integer, is _______.
Your input ____
2
JEE Main 2020 (Online) 3rd September Morning Slot
MCQ (Single Correct Answer)
+4
-1
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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
3
JEE Main 2020 (Online) 3rd September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The mechanism of SN1 reaction is given as : JEE Main 2020 (Online) 3rd September Morning Slot Chemistry - Haloalkanes and Haloarenes Question 115 English
A student writes general characteristics based on the given mechanism as :
(a) The reaction is favoured by weak nucleophiles.
(b) R+ would be easily formed if the substituents are bulky.
(c) The reaction is accompanied by racemization.
(d) The reaction is favoured by non-polar solvents.
A
(a) and (b)
B
(a), (b) and (c)
C
(a) and (c)
D
(b) and (d)
4
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
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