ECAT Pre Engineering Physics Chapter 11 MCQ Test With Answer

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ECAT Physics Chapter 11 Important MCQ's

Sr.#	Question	Answer
1	The state in which ice, water and vapour coexists in equilibrium is called	A. zero degree celsius B. zero degree fahrenheit C. absolute zero D. 373 K
2	Absolute temperature can be calculated by	A. Means squares velocity B. Motion of the molecule C. Both A and B D. None of these
3	The behaviour of gases is well accounted by the kinetic theory based on	A. microscopic approach B. macroscopic approach C. both of them D. none of them
4	At absolute temperature, the kinetic energy of the molecules	A. Becomes zero B. Becomes maximum C. Becomes minimum D. Remain constant
5	At O° K which of the following properties of a gas will be zero?	A. Kinetic energy B. Potential energy C. Vibrational energy D. Density
6	Internal energy is the sum of all the forms of	A. K.E B. P.E C. both of them D. none of them
7	The bicycle pump provides a good example of	A. first law of thermodynamics B. second law of thermodynamics C. third law of thermodynamics D. none of them
8	Adiabatic change occurs when the gas	A. expands B. compressed C. expands or compressed D. expands or compressed rapidly
9	Maximum density of H₂O is at the temperature	A. 32°F B. 39.2°F C. 42°F D. 4°F
10	It is impossible to devise a processes which may convert heat, extracted from a single reservoir, entirely into work without leaving any change in the working system. This is the statement of	A. Clausius statement of second law B. Kelvin'sstatement of second law C. Clausius statement of first law D. Kelvin's statement of first law

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ECAT Pre Engineering Physics Chapter 11 MCQ Test With Answer

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

Physics ECAT Pre Engineering Chapter 11 Heat & Thermodynamics

R.M.S velocity of a particle is V at pressure P. If pressure increases by two times, then R.M.S velocity becomes

Maximum density of H2O is at the temperature

Good absorbers of heat are

An isochoric process is one which take place at

The efficiency of diesel engine is

During the whole carnot cycle

The heat required to raise the temperature of one mole of the substance through 1 K is called

On the compression stroke of the petrol engine, the inlet value is closed and the mixture is compressed

At constant volume temperature is increased. Then

If N is the total number of molecules and V is the volume of the container, then the expression for the pressure of gas is

A succession of events which bring the system back to its initial condition is called

The internal energy of an ideal gas system is generally the

The pressure exerted by the gas is

We can express the work in term of

The nature of thermal radiation is similar to:

An irreversible heat flow from a hot to cold substances of a system, causes the disorder to

If 42 J heat is transferred to the system and the work done by the system is 32 J then what will be the change in internal energy

Boyle's law is applicable in

Brownian motion increases due to

Absolute zero is considered as that temperature at which:

Internal energy is the sum of all the forms of

If the formula PV = nRT, n denotes:

On a cold morning a metal surface will fell colder to touch than a wooden surface, because

No spark plug is needed in

Which of the following is not thermo dynamical function?

The kinetic energy of one molecule of a gas at normal temperature and pressure will be (k = 8.31 J/mole K) :

If denotes the total number of molecules in cubic vessel such that m is mass of each milecule and I is length of each side of vessel, then mN/I3gives the:

Heat required to raise the temperature of one mole of a gas through 1 K at constant pressure is called

Two samples A and B of a gas initially of the same temperature and pressure are compressed from a volume V to a volume V/2 such that A is compressed isothermally and B adiabatically. The final pressure

Energy gas behaves like an ideal gast at

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ECAT Physics Chapter 11 Important MCQ's

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Maximum density of H₂O is at the temperature

If denotes the total number of molecules in cubic vessel such that m is mass of each milecule and I is length of each side of vessel, then mN/I³gives the: