1
JEE Main 2020 (Online) 6th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
The value of KC is 64 at 800 K for the reaction

N2(g) + 3H2(g) ⇌ 2NH3(g)

The value of KC for the following reaction is :

NH3(g) ⇌ $${1 \over 2}$$N2(g) + $${3 \over 2}$$H2(g)
A
8
B
$${1 \over 8}$$
C
$${1 \over 4}$$
D
$${1 \over {64}}$$
2
JEE Main 2020 (Online) 6th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
For the reaction

Fe2N(s) + $${3 \over 2}$$H2(g) ⇌ 2Fe(s) + NH3(g)
A
KC = Kp(RT)1/2
B
KC = Kp(RT)-1/2
C
KC = Kp(RT)
D
KC = Kp(RT)3/2
3
JEE Main 2020 (Online) 6th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
The variation of equilibrium constant with temperature is given below :

Temperature Equilibrium Constant
T1 = 25oC K1 = 10
T2 = 100oC K2 = 100

The values of $$\Delta$$Ho, $$\Delta$$Go at
T1 and $$\Delta$$Go at T2 (in kJ mol–1) respectively, are close to :
[Use R = 8.314 J K–1 mol–1]
A
28.4, –5.71 and –14.29
B
0.64, –7.14 and –5.71
C
28.4, –7.14 and –5.71
D
0.64, –5.71 and –14.29
4
JEE Main 2020 (Online) 5th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Consider the following reaction:

N2O4(g) ⇌ 2NO2(g); $$\Delta$$Ho = +58 kJ

For each of the following cases (a, b), the direction in which the equilibrium shifts is :
(a) Temperature is decreased.
(b) Pressure is increased by adding N2 at constant T.
A
(a) towards reactant, (b) towards product
B
(a) towards reactant, (b) no change
C
(a) towards product, (b) towards reactant
D
(a) towards product, (b) no change
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