The first law of thermodynamics can be stated as:

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

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

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

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

First law of thermodynamics is mathematically stated as

A

dQ = dE + dW

B

dQ = dE - dW

C

dE = dQ + dW

D

dW = dQ + dE

Given below are two statements, one labelled as Assertion (A) and the other labelled as Reason (R). Read the statements and choose the correct answer:
Assertion (A): Austinian theory of law does not properly explain constitutional law, customary law and judicial precedents.
Reason (R): Constitutional law, customary law and judicial precedents do not share the same pedigree as statutory law.

A

Both A and R are true and R is the correct explanation of A

B

Both A and R are true, but R is not the correct explanation of A

C

A is true, but R is false

D

A is true, but R is true

The first law of thermodynamics is the law of

A

Conservation of mass

B

Conservation of energy

C

Conservation of momentum

D

Conservation of heat

The first law of thermodynamics can be stated as:

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