1
NEET 2020 Phase 1
MCQ (Single Correct Answer)
+4
-1
The correct option for free expansion of an ideal gas under adiabatic condition is :
A
q = 0, $$\Delta $$ T < 0 and w > 0
B
q < 0, $$\Delta $$ T = 0 and w = 0
C
q > 0, $$\Delta $$ T > 0 and w > 0
D
q = 0, $$\Delta $$ T = 0 and w = 0
2
NEET 2019
MCQ (Single Correct Answer)
+4
-1
In which case change in entropy is negative?
A
Sublimation of solid to gas
B
2H(g) $$ \to $$ H2(g)
C
Evaporation of water
D
Expansion of a gas at temperature
3
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Under isothermal condition, a gas at 300 K expands from 0.1 L to 0.25 L against a constant external pressure of 2 bar. The work done by the gas is [Given that 1 L bar = 100 J]
A
25 J
B
30 J
C
-30 J
D
5 kJ
4
NEET 2018
MCQ (Single Correct Answer)
+4
-1
The bond dissociation energies of X2 , Y2 and XY are in the ratio of 1 : 0.5 : 1. $$\Delta $$H for the formation of XY is –200 kJ mol–1. The bond dissociation energy of X2 will be
A
800 kJ mol–1
B
200 kJ mol–1
C
400 kJ mol–1
D
100 kJ mol–1
NEET Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
CBSE
Class 12