Question # 1

The relationship between Boltzmann constant K with R and N_Ais given as:

Choose an answer

k = RN_A

k = R/N_A

k = NR/N_A

None of these

Carnot cycle is:

Choose an answer

Reversible

Irreversible

Sometimes A, Sometimes B

None of these

As the working substance of a heat engine completes a cycle, there is no change in:

Choose an answer

Internal energy

Pressure

Volume

All of these

Absolute zero is considered as that temperature at which:

Choose an answer

All liquids become gases

All gases become liquids

Water freezes

None of these

Hotness and coldness of an object is represented in terms of:

Choose an answer

Heat

Temperature

Chemicial

None of these

Change in momentum per second is:

Choose an answer

Product force and time

Product of pressure and area

Ratio of pressure and area

None of these

When two objects come to common temperature, the body is said to be in:

Choose an answer

Static equilibrium

Dynamic equilibrium

Thermal equilibrium

None of these

The ratio of output work per cycle to input energy per cycle is called:

Choose an answer

Entropy

Internal energy

Efficiency

None of these

When heat is added to the system, the entropy change is:

Choose an answer

Positive

Negative

Zero

None of these

Most motorbikes have ____________ cylinder/s engine but cars usually have _________ cylinders on the same crankshaft.

Choose an answer

Four , Six

One , four

two , five

None of these

No of spark plugs needed in diesel engine is:

Choose an answer

Four

Five

Six

None of these

Real gases strictly obey gas laws at:

Choose an answer

High pressures and low temperatures

Low pressures and high temperatures

High pressures and & temperatures

None of these

A gas which strictly obeys the gas laws under all conditions of temperatures and pressure is called:

Choose an answer

Ideal gas

Inert gas

Real gas

None of these

Petrol engine coverts ____________ of available heat energy into work.

Choose an answer

20% to 25%

25% to 30%

30% to 35%

35% to 40%

In thermodynamics, the change in internal energy depends upon:

Choose an answer

The path taken between initial and final states

The initial state only

The final state only

Initial and final states

Tick which of the following is not state variable:

Choose an answer

Heat energy

Pressure

Entropy

Volume

No entropy change is associated with:

Choose an answer

Isothermal

Adiabatic process

Isobaric process

None of them

Steam engine is:

Choose an answer

An optical system

A thermal system

A thermodynamic system

None of these

Carnot engine is ____________ heat engine.

Choose an answer

A reversible

An irreversible

An ideal

Both A and C

In which process, the change in internal energy of the system of zero:

Choose an answer

Isochoric process

isobaric process

Adiabatic process

Isothermal process

The law of thermodynamics which discusses the condition under which heat energy is converted into and equivalent amount of work is:

Choose an answer

1st

2nd

3rd

None of these

More Classes

Other Links

MDCAT Physics Chapter 5 Thermodynamics Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer