MCQs on Thermodynamics for NEET & JEE Chemistry Solved MCQ Test Series, Practice Questions NEET, IIT JEE Main, AIIMS, NTSE Q1. Which ty...
MCQs on Thermodynamics for NEET & JEE
Chemistry Solved MCQ Test Series, Practice Questions
NEET, IIT JEE Main, AIIMS, NTSE
Q1. Which type of ideal gas will have the largest value for Cp – Cv?
- (A) Monoatomic
- (B) Diatomic
- (C) Polyatomic
- (D) The value will be the same for all.
Solution:- The correct option is (D).
Q2. Consider an ideal heat pump and a perfect electric heater. The electric heater converts 100% of the electrical energy into heat energy; the heat pump converts 100% of the electrical energy into work, which then powers a Carnot refrigerator. Which is the more “efficient” way to heat a home? (Ignore maintenance or start-up costs.)
- (A) The electric heater is always more efficient.
- (B) The heat pump is always more efficient.
- (C) The heat pump is more efficient if the outside temperature is not too cold.
- (D) The heat pump is more efficient if the outside temperature is not too cold.
Solution:- The correct option is (C).
Q3. Which of the following is a consequence of the second law of thermodynamics?
- (A) Heat can flow only from high temperature to low temperature.
- (B) Objects in contact will tend toweard having the same temperature.
- (C) Any system that produces order from disorder must have
Solution:- The correct option is (C).
Q4. For which of the following process is the entropy change zero?
- (A) Isobaric
- (B) Isothermal
- (C) Adiabatic
- (D) Constant volume
- (E) None of these, since ΔS > 0 for all process.
Solution:- The correct option is (C) adiabatic.
Q5: Which of the following statements is correct?
a. Only internal energy is a state function but not work.
b. Only work is a state function but not internal energy.
c. Both internal energy and work are state functions.
d. Neither internal energy nor work is a state function.
Answer= a
Q6: The amount of water that can be dissociated by the amount of heat liberated when 49 g H2SO4 and 20 g NaOH are mixed and reacted in aqueous solution is:
a. 1.803
b. 3.58
c. 0.895
d. 17.9
Answer=1
Q7. Warming ammonium chloride with sodium hydroxide in a test tube is an example of:
a. Closed system
b. Isolated system
c. Open system
d. None of these
Answer=C
Q8. Adiabatic process involves
a. Q = 0
b. ∆E = 0
c. ∆W = 0
d. ∆V = 0
Answer= C
Q9. A tightly closed thermoflask contains some ice cubes. This constitutes
a. closed system
b. open system
c. isolated system
d. Non-thermodynamic system
Answer= C
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