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
About Thermodynamics - COMEDK-UGET
Thermodynamics is a vital chapter for COMEDK-UGET aspirants. Mastering the concepts covered in this chapter is essential for securing a top rank.
By rigorously practicing the previous year questions associated with this chapter, you can identify high-yield topics, understand the examiner's perspective, and boost your confidence during the actual exam.
Frequently Asked Questions
Why focus on Thermodynamics PYQs?
Analyzing PYQs for this specific chapter reveals the most frequently tested concepts and the typical complexity of questions, allowing you to tailor your study plan efficiently.
How to best use this analysis?
Review the topic breakdown to see which sub-topics within Thermodynamics carry the most weight. Then, tackle the questions iteratively to solidify your understanding.