1
JEE Main 2020 (Online) 3rd September Morning Slot
Numerical
+4
-0
Change Language
The volume strength of 8.9 M H2O2 solution calculated at 273 K and 1 atm is ______. (R = 0.0821 L atm K-1 mol-1) (rounded off ot the nearest integer)
Your input ____
2
JEE Main 2020 (Online) 3rd September Morning Slot
Numerical
+4
-0
Change Language
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 ____
3
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
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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