MCQ Questions for Class 11 Chemistry Chapter 6 Thermodynamics with Answers

Thermodynamics Class 11 Chemistry MCQs Questions with Answers

Check the below NCERT MCQ Questions for Class 11 Chemistry Chapter 6 Thermodynamics with Answers Pdf free download. MCQ Questions for Class 11 Chemistry with Answers were prepared based on the latest exam pattern. We have Provided Thermodynamics Class 11 Chemistry MCQs Questions with Answers to help students understand the concept very well.

Class 11 Chemistry Chapter 6 Quiz

Class 11 Chemistry Chapter 6 MCQ Online Test

You can refer to NCERT Solutions for Class 11 Chemistry Chapter 6 Thermodynamics to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Thermodynamics Class 11 Chemistry MCQ online test

Q1.	Hesss law is an application of
	A.1st law of Thermodynamics
	B.2nd law of Thermodynamics
	C.Entropy change
	D.∆H = ∆U + P∆V.

Ans: 1st law of Thermodynamics

Q2.	5 mole of an ideal gas expand isothermally and irreversibly from a pressure of 10 atm to 1 atm against a constant external pressure of 1 atm. W_irr at 300 K is:
	A.-15.921 kJ
	B.-11.224 kJ
	C.-110.83 kJ
	D.None of these

Ans: -11.224 kJ

Q3.	At absolute zero the entropy of a perfect crystal is zero. This statement corresponds to which law of thermodynamics?
	A.Zeroth Law
	B.First Law
	C.Second Law
	D.Third Law

Ans: Third Law

Q4.	Which of the following has the highest entropy?
	A.Mercury
	B.Hydrogen
	C.Water
	D.Graphite

Ans: Hydrogen

Q5.	An ideal gas is taken through the cycle A → B → C → A as shown in figure. If the net heat supplied to the gas in cycle is 5 J, the work done by the gas in the process C → A.
	A.-5 J
	B.-15 J
	C.-10 J
	D.-20 J

Ans: -5 J

Q6.	One mole of which of the following has the highest entropy?
	A.Liquid Nitrogen
	B.Hydrogen Gas
	C.Mercury
	D.Diamond

Ans: Hydrogen Gas

Q7.	An ideal gas is taken around the cycle ABCA as shown in P-V diagram The next work done by the gas during the cycle is equal to:
	A.12P₁V₁
	B.6P₁V₁
	C.5P₁V₁
	D.P₁V₁

Ans: 5P₁V₁

Q8.	Third law of thermodynamics provides a method to evaluate which property?
	A.Absolute Energy
	B.Absolute Enthalpy
	C.Absolute Entropy
	D.Absolute Free Energy

Ans: Absolute Entropy

Q9.	Which of the following is/are a reason that water is a desirable heat sink for use in calorimeters?
	A.I only
	B.I and II
	C.I, II and III
	D.II only

Ans: I, II and III

Q10.	In a chemical reaction the bond energy of reactants is more than the bond energy of the products. Therefore, the reaction is
	A.Exothermic
	B.Athermic
	C.Endothermic
	D.Endergonic

Ans: Endothermic

Q11.	In a reversible process the system absorbs 600 kJ heat and performs 250 kJ work on the surroundings. What is the increase in the internal energy of the system?
	A.850 kJ
	B.600 kJ
	C.350 kJ
	D.250 kJ

Ans: 350 kJ

Q12.	Which of the following neutralisation reactions is most exothermic?
	A.HCl and NaOH
	B.HCN and NaOH
	C.HCl and NH₄OH
	D.CH₃COOH and NH₄OH

Ans: HCl and NaOH

Q13.	A student runs a reaction in a closed system. In the course of the reaction, 64.7 kJ of heat is released to the surroundings and 14.3 kJ of work is done on the system. What is the change in internal energy (∆U) of the reaction?
	A.-79.0 kJ
	B.50.4 kJ
	C.79.0 kJ
	D.-50.4 kJ

Ans: -50.4 kJ

Q14.	Identify the correct statement from the following in a chemical reaction.
	A.The entropy always increases
	B.The change in entropy along with suitable change in enthalpy decides the fate of a reaction
	C.The enthalpy always decreases
	D.Both the enthalpy and the entropy remain constant

Ans: The change in entropy along with suitable change in enthalpy decides the fate of a reaction

Q15.	2 mole of an ideal gas at 27° C expands isothermally and reversibly from a volume of 4 litres to 40 litre. The work done (in kJ) is:
	A.w = -28.72 kJ
	B.w = -11.488 kJ
	C.w = -5.736 kJ
	D.w = -4.988 kJ

Ans: w = -11.488 kJ

Q16.	The latent heat of vapourization of ε liquid at 500 K and 1 atm pressure is 10.0 kcal/mol. What will be the change in internal energy (ΔU) of 3 moles of liquid at the same temperature
	A.13.0 kcal/mol
	B.−13.0 kcal/mol
	C.27.0 kcal
	D.−7.0 kcal/mol

Ans: 27.0 kcal

Q17.	Calculate the heat required to make 6.4 Kg CaC₂ from CaO(s) and C(s) from the reaction: CaO(s) + 3 C(s) → CaC₂(s) + CO (g) given that ∆_f H° (CaC₂) = -14.2 kcal. ∆_f H° (CO) = -26.4 kcal.
	A.5624 kca
	B.1.11 × 10⁴ kcal
	C.86.24 × 10³
	D.1100 kcal

Ans: 1.11 × 10⁴ kcal

Q18.	Entropy of the universe is
	A.Continuously Increasing
	B.Continuously Decreasing
	C.Zero
	D.Constant

Ans: Continuously Increasing

Q19.	At absolute zero the entropy of a perfect crystal is zero. This statement corresponds to which law of thermodynamics?
	A.Zeroth Law
	B.First Law
	C.Second Law
	D.Third Law