Deck 2: Thermodynamics: Concepts and Laws

Question 1

Which one of the following statements is correct?

A)pressure is an extensiveproperty
B)density is an intensiveproperty
C)density is an extensiveproperty
D)temperature is anextensive property

Answer 1

density is an intensiveproperty

Question 2

First law of thermodynamics deals with conservation of

A)mass
B)momentum
C)energy
D)heat

Answer 2

energy

Question 3

Which one of the following processes or systems does not involve heat

A)steady processes
B)isothermal processes
C)adiabatic processes
D)thermal processes

Answer 3

adiabatic processes

Question 4

Thermodynamic equillibrium is completely defined by the specification of

A)generalised displacements
B)internal energy
C)enthalpy
D)all of the above

Question 5

………. Is not a property of the system

A)pressure
B)temperature
C)heat
D)specific volume

Question 6

In which of the following processes the external work done is not zero?

A)throttling
B)free expansion
C)constant volume process
D)constant pressureprocess

Question 7

The extension & compression of a helical spring is an example of

A)irreversible process
B)reversible process
C)isothermal process
D)adiabatic process

Question 8

In all irrevesible processes, the entropy of the system

A)remains unaltered
B)reduces to zero
C)increases
D)none of the above

Question 9

Temperature of a gas is produced due to which of the following?

A)attraction of molecules
B)repulsion of molecules
C)kinetic energy of molecules
D)all of the above

Question 10

The same volume of all gases at same temperatureand pressure would represent their

A)specific gravity
B)densities
C)specific weights
D)molecular weights

Question 11

First law of thermodynamics gives relationship between which of the following?

A)heat & internal energy
B)heat & work
C)heat, work & properties of the system
D)various thermodynamics processes

Question 12

The temperature in a process in which work is done by expanding a gas under adiabatic condition will

A)decrease
B)increase
C)first decrease & then increase
D)remain unaltered

Question 13

On which of the following laws measurement of temperature is based?

A)joule's law
B)zeroth law of thermodynamics
C)first law of thermodynamics
D)second law of thermodynamics

Question 14

The perpetual motion of the first kind is represented by which of the following?

A)a machine that continuously creates itsown energy
B)an engine with 100 percent efficiency
C)a fully reversible engine
D)none of the above

Question 15

Which of the following statements regarding a perpetual motion machine is correct?

A)it is an in efficient machine
B)it is non-thermodynamic machine
C)it is thermodynamic machine
D)it is hypothetic machine whose operation would violate the laws of thermodynamics

Question 16

Which of the following statements, regarding a property of system, is correct?

A)it is path function
B)it is a point function
C)it is always of intensive type
D)none of the above

Question 17

……….. Is an intensive property

A)specific volume
B)total volume
C)total mass
D)total energy of a system

Question 18

A system is said to be in thermodynamic equilibrium if it is in

A)chemical equilibrium
B)thermal equilibrium
C)mechanical equilibrium
D)all of the above

Question 19

The basis for measuring thermodynamic property of temperature is given by ……. Law of thermodynamics

A)zeroth
B)first
C)second
D)third

Question 20

As differentials, heat & work would be described mathematically as

A)exact
B)inexact
C)point function
D)discontinuity

Question 21

Which of the following is an open thermodynamic system?

A)pressure cooker
B)manual ice cream freezer
C)centrifugal pump
D)none of the above

Question 22

……… is a non-quasistatic process

A)free expansion of gas
B)expansion of gas in a cylinder under constantpressure
C)rapid leakage of air from a bicycle tyre
D)gradual compression of gas inside a piston-cylinderarrangement

Question 23

Choose the correct statement

A)pressure, temp. &entropy are extensive properties
B)pressure, temp. &entropy are intensive properties
C)pressure, volume & temp. are extensive properties
D)volume & entropy are extensive properties

Question 24

The first law of thermodynamics defines

A)entropy
B)internal energy
C)work
D)heat

Question 25

A process becomes irreversible due to

A)work performed by thesystem
B)work performed uponthe system
C)heat supplied to the system
D)friction in the system