MCQs on Thermodynamics CLASS 11
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A. Equilibrium in mechanics means
- Net outside force and torque on an object are zero
- A net outside force is zero
- Net Torque is Zero
- Net Outside force or Torque is zero
Answer 1
B. What is adiabatic wall same as that of
- Conduction Wall
- Convection Wall
- Radiation Wall
- Insulation Wall
Answer 4
C. What is diathermic Wall
- A wall that allows energy flow
- A wall that does not allow energy flow
- Insulation Wall
- Electromagnetic Wall
Answer 1
D. The Zeroth law of thermodynamics states that:
- Two systems are always in thermal equilibrium or balance with each other
- Two systems can never be in thermal equilibrium or balance with each other
- Two systems in thermal equilibrium or balance with a third system individually are in thermal equilibrium or balance with each other
- Two systems in thermal equilibrium or balance with a third system individually are not in thermal equilibrium or balance with each other
Answer 3
E. First law of thermodynamics is
- Law of conservation of energy
- Law of non conversation of energy
- Is same as that of Zeroth law of thermodynamics
- Is same as that of second law of thermodynamics
Answer 1
F. The pressure-volume curve for a constant temperature is known as
- Isotope
- Isotherm
- Neotherm
- Extensive
Answer 2
G. Two thermodynamic state variables are
- Extensive and Intrinsic
- Extrinsic and Intrinsic
- Extensive and Intensive
- External and Internal
Answer 3
H. Extensive systems specify:
- Size
- Temperature
- Pressure
- Boiling Point
Answer 1
I. The variables that do not get changed for every part of two-part system are
- Intensive
- Extensive
- Isothermic
- Exothermic
Answer 1
J. The variables whose value get halved for every part of two part system are
- Intensive
- Extensive
- Isothermic
- Exothermic
Answer 2
K. A operation in which the temperature of the body is kept fixed throughout
- Adiabatic
- Isothermal
- Isobaric
- Isochoric
Answer 2
L. An operation in which the pressure of the body is kept fixed throughout
- Adiabatic
- Isothermal
- Isobaric
- Isochoric
Answer 3
M. A operation in which the volume of the body is kept fixed throughout
- Adiabatic
- Isothermal
- Isobaric
- Isochoric
Answer 4
O. A operation in which no heat flow between a body and environment
- Adiabatic
- Isothermal
- Isobaric
- Isochoric
Answer 1
P. With respect to the Isothermal process, what is the ideal gas equation
P = pressure
V = Volume
- P/V = Constant
- PV = Constant
- V/P = Constant
- P = Constant
Answer 2
Q. A __________ is the opposite of a heat engine while it is the same as that of heat pump
- Refrigerator
- Device
- Adiabatic
- Isobaric
Answer 1
R According to the second Law of thermodynamics efficiency of a heat engine can never be
- Infinity
- Zero
- Unity
- Negative
Answer 3
S Pick a Kelvin Plank Statement
- A process is achievable whose only purpose is the absorption of heat from a reservoir and the complete conversion of heat into work
- A process is achievable whose only purpose is the emittance of heat from a reservoir and the complete conversion of heat into work
- No process is achievable whose only purpose is the absorption of heat from a reservoir and the complete conversion of heat into work
- No process is achievable whose only purpose is the emittance of heat from a reservoir and the complete conversion of heat into work
Answer 3
T. A process is reversible if it is
- Static and dissipative
- Non-static and dissipative
- Non-static and Non- dissipative
- Static and Non- dissipative
Answer 3
U. A _______ heat engine working between two temperatures is Carnot engine
- Irreversible
- Reversible
- Irreversible or Reversible
- Irreversible and Reversible
Answer 2