COMEDK-UGET SERIES Chemistry
Thermodynamics
24 previous year questions.
Volume: 24 Ques
Yield: High
High-Yield Trend
1
2024 3
2023 4
2022 3
2015 3
2012 1
2011 2
2010 2
2009 2
2008 1
2007 2
2006 Chapter Questions 24 MCQs
01
PYQ 2006
medium
chemistry ID: comedk-u
For a spontaneous reaction, free energy
1
remains unchanged
2
increases
3
decreases
4
doubles.
02
PYQ 2006
medium
chemistry ID: comedk-u
In the reaction,
1
2
3
4
03
PYQ 2007
medium
chemistry ID: comedk-u
A process is spontaneous at a given temperature if
1
2
3
4
04
PYQ 2008
medium
chemistry ID: comedk-u
In an open system
1
there will be exchange of both matter and energy
2
there will be no exchange of matter and energy
3
there will be exchange of energy only
4
there will be exchange of matter only
05
PYQ 2008
medium
chemistry ID: comedk-u
Heat of neutralization of any strong acid and strong base is always constant and . This is because
1
both the acid and base undergo complete ionization
2
during neutralization salt and water are formed
3
1 mole of water is formed from and ions
4
the reaction is exothermic
06
PYQ 2009
medium
chemistry ID: comedk-u
Which of the following is an intensive property?
1
Enthalpy
2
Entropy
3
Density
4
Mass
07
PYQ 2009
medium
chemistry ID: comedk-u
A reaction is spontaneous at all temperatures when
1
is -ve and is +ve
2
is +ve and is -ve
3
both and are -ve
4
both and are +ve
08
PYQ 2010
medium
chemistry ID: comedk-u
Gibb's free energy G is defined as
1
2
3
4
09
PYQ 2010
medium
chemistry ID: comedk-u
A spontaneous reaction is impossible if.
1
both and are negative
2
both and are positive
3
is negative and is positive
4
is positive and is negative
10
PYQ 2011
medium
chemistry ID: comedk-u
An intensive property is
1
boiling point
2
mass
3
enthalpy
4
work.
11
PYQ 2012
medium
chemistry ID: comedk-u
The heat of formation of is -286 kJ. The? heat of formation of is likely to be
1
- 286 kJ
2
+286 kJ
3
- 341 kJ
4
- 242.8 kJ
12
PYQ 2012
medium
chemistry ID: comedk-u
The enthalpy of neutralization of HCI and NaOH is x kJ. The heat evolved when 500 ml of 2 N HCl is mixed with 250 mt of 4 N NaOH will be
1
2
3
4
13
PYQ 2012
medium
chemistry ID: comedk-u
The temperature of one mole of an ideal gas increases from 298 K when it absorbs 200 J of heat at constant volume. The change in the internal energy of the gas is
1
200 J
2
140 J
3
-200 J
4
- 140 J
14
PYQ 2015
medium
chemistry ID: comedk-u
For one mole of the lattice enthalpy is
1
2
3
4
15
PYQ 2015
medium
chemistry ID: comedk-u
An endothermic reaction is found to have entropy change. The reaction will be
1
possible at high temperature
2
possible only at low temperature
3
not possible at any temperature
4
possible at any temperature.
16
PYQ 2015
easy
chemistry ID: comedk-u
For an adiabatic change in a system, the condition which is applicable will be
1
2
3
4
17
PYQ 2022
easy
chemistry ID: comedk-u
The relation between work done in reversible and irreversible process is
18
PYQ 2022
easy
chemistry ID: comedk-u
In which of the following changes, entropy decreases?
19
PYQ 2022
easy
chemistry ID: comedk-u
The correct condition for physical adsorption is
20
PYQ 2022
medium
chemistry ID: comedk-u
Which of the following are not path functions?
I. H - T S
II. W
III. q
IV. q + W
1
I and III
2
I, II, IV
3
II, III and IV
4
I and IV
21
PYQ 2023
medium
chemistry ID: comedk-u
For an adiabatic change in a system, the condition which is applicable is
1
2
3
4
22
PYQ 2023
medium
chemistry ID: comedk-u
Match the items in Column I with their description in Column II:
1
A = R, B = Q, C = S, D = P
2
A = R, B = P, C = S, D = Q
3
A = Q, B = S, C = P, D = R
4
A = S, B = Q, C = D, D = P
23
PYQ 2023
easy
chemistry ID: comedk-u
Gaseous Nitrous oxide decomposes at 298 K to form Nitrogen gas and Oxygen gas. The -163.15 . Calculate Internal energy change for the decomposition of 100 g of Nitrous oxide gas under the same conditions of temperature and pressure.
24
PYQ 2024
medium
chemistry ID: comedk-u
5.0 moles of an Ideal gas at 3.0 atm pressure and 27 C is compressed isothermally to half its volume by application of an external pressure of 3.5 atm. What is the amount of work done (in joules) on the gas? Given: 1 L atm = 101.3 J, R = 0.082 L atm K mol
1
-3559.9 J
2
7268.3 J
3
-10367.4 J
4
14359.2 J