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	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. P=P/V<1/2mv²> B. P=2N/V<1/2mv²> C. P=2/3N/V<1/2mv²> D. P=2/3N/V<mv²>
2	The unit of thermodynamical scale is	A. centigrade B. fahrenheit C. kelvin D. none of them
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	In the formula P = N₀KT, N₀denotes:	A. Number of molecules per unit per volume B. Number of moles C. Number of molecules D. None of these
5	Which of the following is not thermo dynamical function?	A. Enthalpy B. Work done C. Gibb's energy D. Internal energy
6	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	A. 0 J B. 2 J C. 5 J D. 10 J
7	In the theory of dimensional analysis, heat may be properly represented by:	A. ML²T^-2 B. MT^-2 C. ML^-1T^-1 D. None of these
8	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
9	Adiabatic change occurs when the gas	A. expands B. compressed C. expands or compressed D. expands or compressed rapidly
10	Truth of kinetic energy is confirmed by:	A. Diffusion of gases B. Brownian motion C. Both A and B 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

Energy gas behaves like an ideal gast at

For the working of a heat engine, there must be

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

The second law of thermodynamics is concerned with the circumstances in which

The temperature of gas is produced by

Absolute temperature can be calculated by

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

An isochoric process is one which take place at

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

If the ratio of densities of two gases is 1:4, then the ratio of their rates of diffusion into one another is

The earliest heat engine was

The Boltzman constant has the value

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

Which of the following is a state variable

The relationship between Boltzmann constant k with R and NAis given as:

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:

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

Which of the following does not have the same units:

At absolute temperature, the kinetic energy of the molecules

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

If an amount of heat enters the system it could

Two metal rods A and B have their initial lengths in the ratio 2 : 3 and coefficients of linear expansion in the ratio 4 : 3. When they are heated through same temperature difference the ratio of their linear expansion is

When heat is removed from the system

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

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

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

The example of irreversible process is

Generally a temperature scale is established by

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

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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The relationship between Boltzmann constant k with R and N_Ais given as:

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: