1
JEE Main 2020 (Online) 2nd September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The size of a raw mango shrinks to a much smaller size when kept in a concentrated salt solution. Which one of the following processes can explain this?
A
Osmosis
B
Reverse osmosis
C
Diffusion
D
Dialysis
2
JEE Main 2020 (Online) 2nd September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The one that is not expected to show isomerism is :
A
[Pt(NH3)2Cl2]
B
[Ni(NH3)4(H2O)2]2+
C
[Ni(en)3]2+
D
[Ni(NH3)2Cl2]
3
JEE Main 2020 (Online) 2nd September Evening Slot
Numerical
+4
-0
Change Language
For the disproportionation reaction
2Cu+(aq) ⇌ Cu(s) + Cu2+(aq) at 298 K. ln K
(where K is the equilibrium constant) is
___________ × 10–1.
Given :
($$E_{C{u^{2 + }}/C{u^ + }}^0 = 0.16V$$
$$E_{C{u^ + }/Cu}^0 = 0.52V$$
$${{RT} \over F} = 0.025$$)
Your input ____
4
JEE Main 2020 (Online) 2nd September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Match the type of interaction in column A with the distance dependence of their interaction energy in column B
A B
(i) ion-ion (a) $${1 \over r}$$
(ii) dipole-dipole (b) $${1 \over {{r^2}}}$$
(iii) London dispersion (c) $${1 \over {{r^3}}}$$
(d) $${1 \over {{r^6}}}$$
A
(I)-(a), (II)-(b), (III)-(d)
B
(I)-(b), (II)-(d), (III)-(c)
C
(I)-(a), (II)-(b), (III)-(c)
D
(I)-(a), (II)-(c), (III)-(d)

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