ECAT Pre General Science Chapter 11 online mcq test with answers for Physics chapter 11 (Heart & Thermodynamics)

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ECAT Physics Chapter 11 Important MCQ's

Sr.#	Question	Answer
1	First law of thermodynamic is special case of	A. Law of conservation of energy B. Charle's law C. Law of conservation of mass D. Boyle's law
2	A real gas can be approximated to an ideal gas at	A. Low density B. High pressure C. High density D. Low temperature
3	If a system undergoes a natural process it will go in the direction that causes the entropy of the system plus the environment to increase, this is another statement of	A. second law thermodynamics B. first law of thermodynamics C. third law of thermodynamics D. none of them
4	When two objects are rubbed together, their internal energy	A. remains same B. decreases C. remains the same then decreases D. increases
5	Absolute zero is considered as that temperature at which:	A. All liquid become gases B. All gases become liquid C. Water freezes D. None of these
6	The temperature of gas is produced by	A. At potential energy of its molecules B. The kinetic energy of its molecules C. The attractive force between its molecules D. The repulsive force between its molecules
7	Gas constant per molecule is called:	A. Universal gas constant B. Stefen's constant C. Boltzmann constant D. Gravitation constant
8	Tick the correct pair when M denotes the molecular mass and other symbols carry usual meanings:	A. N = nN_Am = MN_A B. n = N N_A, M = mN_A C. M = N_A/N , N_A= m/n D. N = nN_A, M = mN_A
9	The absolute temperature for an ideal gas is	A. directly proportional to the rotational K.E of gas molecules B. directly proportional to the vibrational K.E of gas molecules C. directly proportional to the average translational K.E.of gas molecules D. directly proportional to the P.E. of gas molecules
10	The example of irreversible process is	A. slowly liquification B. slowly evaporation C. an explosion D. all of them

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ECAT Pre General Science Physics Chapter 11 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 11 Heat & Thermodynamics

ECAT Pre General Science Physics Chapter 11 Heat & Thermodynamics

A gas is compressed adiabatically till its temperature is double. The ratio of its final volume to initial volume will be

Tick the correct pair when M denotes the molecular mass and other symbols carry usual meanings:

A diatomic gas molecule has

The heat required to raise the temperature of one mole of the gas through 1 K at constant volume is called

If a liquid is heated in weightlessness, the heat is transmitted through

A typical four stroke petrol engine undergoes how many successive processes in each cycle

First law of thermodynamics is consequence of conservation of

Pressure of a gas at constant volume is proportion to

Rate of diffusion is

The internal energy of an ideal gas system is generally the

We cannot utilize the heat contents of oceans and atmosphere because

No spark plug is needed in

The curve representing an isothermal process is called

The work done by the system on its environment is considered as

On the power stroke, a spark fires the mixtures causing a rapid increase in pressure and temperature and the burning mixture expands

During the whole carnot cycle

For making cooking utensils, which of the following pairs of properties is most suited?

The volume of universal gas constant R is:

Generally a temperature scale is established by using certain physical properties of a material which varies

First law of thermodynamic is special case of

The example of irreversible process is

Absolute temperature can be calculated by

If an amount of heat enters the system it could

The ideal gas law is

The motion of molecules in gases is:

Which of the following is not an example of adiabatic process

The temperature of gas is produced by

We can express the work in term of

Since the absolute scale is independent of the property of the working substance, hence, can be applied at

The pressure exerted by the gas is

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ECAT Physics Chapter 11 Important MCQ's

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