## Chemistry MCQ on Thermodynamics for NEET, JEE, Medical and Engineering Exam 2022

Chemistry MCQ on Thermodynamics: Chemistry is considered to be the most scoring subject in NEET JEE Exam. As it is one of the easiest scoring subjects, it is often ignored and undermined a subject. But if you want to get an edge over others, here is a tip, master NEET/JEE Chemistry concepts. Chemistry demands the attention of students in understanding reactions and concrete basic understanding but once done it only gets easier from there. Mastering NCERT syllabus for NEET/JEE Chemistry should be topping your list of to-do for chemistry. In this post we are providing you Chemistry MCQ on Thermodynamics, which will be beneficial for you in upcoming NEET, JEE, Medical and Engineering Exams.

## Chemistry MCQ on Thermodynamics

Q1. What is the function of a catalyst in a chemical reaction?
a) reduces enthalpy of reaction
b) decrease rate constant of reaction
c) increases activation energy of reaction
d) does not affect the equilibrium constant of reaction

d) does not affect the equilibrium constant of reaction

Q2. ΔH for the reaction N2 + 3H2 ⇋ 2NH3
a) ΔH = RT
b) ΔE – RT
c) ΔE – 2RT
d) ΔE + 2RT

c) ΔE – 2RT

Q3. Which is true for the entropy of a spontaneous reaction?
a) ΔS(system) > 0 only
b) ΔS(surroundings) > 0 only
c) ΔS(system) – ΔS(surroundings) > 0
d) ΔS(system) + ΔS(surroundings) > 0

d) ΔS(system) + ΔS(surroundings) > 0

Q4. An ideal gas is expanded isothermally at 300 K from 1 litre to 10 litres. Find the ΔE for this process (R = 2 cal mol-1 K-1)
a) zero
b) 98.77 cal
c) 163.7 cal
d) 1381.1 cal

a) zero

Q5. What will be the work done by 3 moles of an ideal gas when it expands spontaneously in a vacuum?
a) zero
b) infinite
c) 3 joules
d) 9 joules

a) zero

Q6. What will be the value of ΔH, if the forward and reverse reactions have the same energy of activation?
a) ΔS = 0
b) ΔG = 0
c) ΔH = 0
d) ΔH = ΔG = ΔS = 0

c) ΔH = 0

Q7. Find the temperature at which the below reaction will be in equilibrium if the enthalpy and entropy change for the reaction is 30 kJ mol-1 and 105 J K-1 mol-1 respectively.

Br2(l) + Cl2(g) → 2BrCl(g)

a) 273 K
b) 300 K
c) 450 K
d) 285.7 K

d) 285.7 K

Q8. What is the molar entropy change for melting of ice at 0℃, if ΔHf = 1.435 kcal/mol?
a) 0.526 cal/(mol K)
b) 5.26 cal/(mol K)
c) 10.52 cal/(mol K)
d) 21.04 cal/(mol K)

b) 5.26 cal/(mol K)  