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

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Mohsin rajput Rajput 21 - Sep - 2025 06 Min 38 Sec 9/30
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ECAT Physics Chapter 11 Important MCQ's

Sr.#	Question	Answer
1	A real gas can be approximated to an ideal gas at	A. Low density B. High pressure C. High density D. Low temperature
2	Electromagnetic waves emitted by hot bodies are called:	A. Photoelectrons B. Alpha rays C. Thermal radiation D. None of these
3	The unit of thermodynamical scale is	A. centigrade B. fahrenheit C. kelvin D. none of them
4	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
5	The process which is carried out at constant temperature is known as	A. adiabatic process B. isothermal process C. isochoric process D. none of them
6	Brownian motion increases due to	A. Increase in size of Brownian particle B. Increase in temperature of medium C. Increase in density of medium D. Increase in viscosity of medium
7	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
8	A heat engine is that which converts	A. mechanical energy into thermal energy B. thermal energy into mechanical energy C. K.E into potential energy D. heat energy into light energy
9	Generally a temperature scale is established by	A. one fixed point B. two fixed point C. three fixed point D. four fixed point
10	A gas is compressed adiabatically till its temperature is double. The ratio of its final volume to initial volume will be	A. 1/2 B. More than 1/2 C. Less than 1/2 D. Between 1 and 2

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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

One kilogram of different substances contain

A process in which no heat enters or leaves the system is called

Amount of heat required to raise the temperature of a body through 1 K is called its

During the whole carnot cycle

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

According to the second law, which is must to produce work

While deriving equation of pressure by kinetic theory of gases, we take into account:

If the volume of the gas is to be increased by 4 times, then

According to kinetic theory of gases, molecules of a gas behave like

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

The internal energy of a system does not depend upon the

The volume of a gas will be double of what it is at 0°C (pressure remaining constant) at

At what temperature the adiabatic change is equivalent to the isothermal change?

Which of the following is not an assumption of kinetic energy

Rice takes longest to cook

The motion of molecules in gases is:

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:

Pressure of a gas at constant volume is proportion to

If the formula PV = nRT, n denotes:

In case of an ideal gas, the P.E associated with its molecule is

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

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

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 process which can be retraced in exactly reverse order, without producing any change in the surroundings is called

Energy gas behaves like an ideal gast at

Pressure applied at any point of gas at rest is transmitted equally to all parts of the gas. This is the statement of:

The example of irreversible process is

Brownian motion increases due to

Which of the following is not thermo dynamical function?

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