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	Hotness and coldness of an object is represented in terms:	A. Heat B. Temperature C. Chemical energy D. None of these
2	If the ratio of densities of two gases is 1:4, then the ratio of their rates of diffusion into one another is	A. 2 : 1 B. 4 : 1 C. 1 : 4 D. 3 : 4
3	The coefficient of linear expansion of iron is 0.000011 per°K. An iron rod is 10 metre long at 27°C. The length of the rod will be decreased by 1.1 mm when the temperature of the rod changes to	A. 0°C B. 10°C C. 17°C D. 20°C
4	Pressure of a gas at constant volume is proportion to	A. Total energy of gas B. Average P.E to molecules C. Average K.E of molecules D. Total internal energy of gas
5	The work done by the system on its environment is considered as	A. positive B. negative C. zero D. any one of them
6	An isochoric process is one which take place at	A. Constant internal energy B. Constant entropy C. Constant volume D. Constant pressure
7	The absolute temperature of the tripple point of water is	A. 100°C B. 4°C C. 373 K D. 273.16 K
8	The efficiency of carnot engine cannot be 100% or one unless cold reservoir is at	A. 100 K B. 273 K C. 0 K D. -273 K
9	A diatomic gas molecule has	A. translational energy B. rotaional energy C. vibrational energy D. all of them
10	The nature of thermal radiation is similar to:	A. Ultraviolet rays B. Light rays C. Both of them D. None of these

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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

The disorder in the system increases due to the

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

Rate of diffusion is

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

The volume of universal gas constant R is:

The unit of thermodynamical scale is

If R is gas constant for 1 gram mole, Cpand Cvare specific heat for a solid then

In the theory of dimensional analysis, heat may be properly represented by:

In a heat engine, heat is supplied by the

Pressure of a gas at constant volume is proportion to

Brownian motion increases due to

At O° K which of the following properties of a gas will be zero?

The absolute temperature of the tripple point of water is

A real gas can be approximated to an ideal gas at

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

Efficiency of carnot engine is independent of the

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

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

Sadi carnot described an ideal heat engine in

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 reversible cycle is the one in which

The pressure exerted by the gas is

The efficiency of petrol engine is usually not more than 25% to 30% because of

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:

The temperature scale approved in SI units is:

If an amount of heat enters the system it could

The highest efficiency of a heat engine whose low temperature is 17°C and the high temperature is 200°C is

When heat is removed from the system

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

Which of the following is not an example of adiabatic process

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ECAT Physics Chapter 11 Important MCQ's

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If R is gas constant for 1 gram mole, C_pand C_vare specific heat for a solid then

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: