According to Kelvin-Planck’s statement of second law of thermodynamics,

Statement (I): The first law of thermodynamics analyses the problem quantitatively whereas the second law of thermodynamics analyses the problem qualitatively. Statement (II) The Throttling process is a reversible process.

A

Both Statements (I) and Statement (II) are individually true and Statement (II) is the correct explanation of Statement(I)

B

Both Statement (I) and Statement (II) are individually true but Statement (II) is Not the correct explanation of Statement(I)

C

Statement (I) is true but Statement (II) is false

D

Statement (I) is false but Statement (II) is true

Which of the following statements about First law of thermodynamics are correct? Statement 1: The First Law of Thermodynamics is a statement of energy conservation. Statement 2: Energy cannot be created or destroyed it can be converted from one form to another.

A

True, False

B

True, True

C

False, True

D

False, False

A piston containing an ideal gas is originally in the state X (see figure). The gas is taken through a thermal cycle X → Y → X as shown
Thermodynamics and Statistical Physics mcq question image

Thermodynamics and Statistical Physics mcq question image

The work done by the gas is positive, if the direction of the thermal cycle is

A

clockwise

B

counter-clockwise

C

neither clockwise nor counter-clockwise

D

clockwise from X → Y and counter-clockwise from Y → X

If k is the rate constant for a reaction and T is the absolute temperature in the given figure, the activation energy for the reaction is . . . . . . . . J/K mole.
Metallurgical Thermodynamics and Kinetics mcq question image

Metallurgical Thermodynamics and Kinetics mcq question image

A

1000

B

2000

C

4155

D

8314

If 'Δx' represents adherent oxide layer thickness and 't' is time, which of the following curves represents diffusion controlled oxidation kinetics?
Metallurgical Thermodynamics and Kinetics mcq question image

A

P

B

Q

C

R

D

S

Select the correct plot of Gibbs free energy (G) Vs. Temperature (T) for a single component system from the following:
Metallurgical Thermodynamics and Kinetics mcq question image

A

P

B

Q

C

R

D

S

Consider the figures of a metal ball and a metal ring given below.
The metal ball can just pass through the hole of a metal ring formed out of a strip. When the ball is heated it gets stuck. But when the metal is heated
Heat and Thermodynamics mcq question image

Heat and Thermodynamics mcq question image

A

The ball can still pass through the ring as diameter expands on heating

B

The ball gets stuck because of the diameter of the hole decrease on expansion

C

The ball will still pass through because the hole diameter does not change

D

The ball will pass through because there is no change in the ring

Which of the following statement is correct according to Clausis statement of second law of thermodynamics?

A

It is possible to transfer heat from a body at a lower temperature to a body at a higher temperature.

B

It is impossible to transfer heat from a body at a lower temperature to a body at a higher temperature, without the aid of an external source.

C

It is possible to transfer heat from a body at a lower temperature to a body at a higher temperature by using refrigeration cycle.

D

None of the above

According to Kelvin-Planck’s statement of the second law of thermodynamics, which of the following statements is correct?

A

Heat from a source should be rejected to a high temperature sink.

B

It restricts the mechanical efficiency of the heat engine to be lesser than unity.

C

Thermal efficiency of the heat engine will be unity.

D

It restricts the thermal efficiency of the heat engine to be lesser than unity.

According to Kelvin-Planck's statement of second law of thermodynamics,

A

It is impossible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work

B

It is possible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work

C

It is impossible to construct a device which operates in a cyclic process and produces no effect other than the transfer of heat from a cold body to a hot body

D

None of the above

According to Kelvin-Planck’s statement of second law of thermodynamics,

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