ECAT Pre Engineering Physics Chapter 11 MCQ Test With Answer

Top Scorers Of Physics ECAT Pre Engineering Chapter 11 Heat & Thermodynamics MCQ`s Test

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ECAT Physics Chapter 11 Important MCQ's

Sr.#	Question	Answer
1	Melting point of ice	A. Increases with increasing pressure B. Decreases with increasing pressure C. Is independent of pressure D. Is proportional to pressure
2	A process is a reversible process, if the entropy of the system	A. increases B. decreases C. remains constant D. none of them
3	Pressure exerted by a gas is	A. Independent of density of the gas B. Inversely proportional to the density of the gas C. Directly proportional to the square of the density of the gas D. Directly proportional to the density of the gas
4	R.M.S velocity of a particle is V at pressure P. If pressure increases by two times, then R.M.S velocity becomes	A. 2V B. 3V C. 0.5V D. V
5	The unit of thermodynamical scale is	A. centigrade B. fahrenheit C. kelvin D. none of them
6	The volume of a gas will be double of what it is at 0°C (pressure remaining constant) at	A. 546 K B. 273 K C. 546°C D. 273°C
7	Absolute temperature can be calculated by	A. Means squares velocity B. Motion of the molecule C. Both A and B D. None of these
8	The internal energy of a system does not depend upon the	A. initial state of the system B. final state of the system C. path D. none of them
9	For making cooking utensils, which of the following pairs of properties is most suited?	A. Low specific heat and high conductivity B. Low specific heat and low conductivity C. High specific heat and high conductivity D. High specific heat and low conductivity
10	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

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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

The example of irreversible process is

Carnot heat engine only used

The efficiency of carnot engine cannot be 100% or one unless cold reservoir is at

An isochoric process is one which take place at

The example of reversible process is

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

Heat travels through vacuum by

In all natural processes where heat flows from one system to another, there is always a net

In thermodynamics, internal energy is the function of

The basis to define a temperature scale that is independent of material properties is provided by

If a molecule with momentum mv strikes a wall and rebound then the change in momentum will be:

The product of the pressure and volume of an ideal gas is

When heat is removed from the system

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

Melting point of ice

Pressure of a gas at constant volume is proportion to

Truth of kinetic energy is confirmed by:

The rate of change of momentum of a molecule is equal to:

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

What temperature is the same on Celsius scale as well as on Fahrenheit scale?

The volume of given mass of a gas will be doubled at atmosphere pressure if the temperature of the gas is changed from 150°C to

The process which is carried out at constant temperature is known as

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

The unit of thermodynamical scale is

Pressure may be define as _______ per second per unit area:

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:

Which of the following does not have the same units:

Hydrogen and helium of same volume V at same temperature T and same pressure P are mixed to have same volume V. The resulting pressure of the mixtures will be

Pressure exerted by a gas is

The curve representing an adiabatic process is called

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ECAT Physics Chapter 11 Important MCQ's

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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: