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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Sr.#	Question	Answer
1	The work done on the system by the environment is considered as	A. positive B. negative C. zero D. any one of them
2	Maximum density of H₂O is at the temperature	A. 32°F B. 39.2°F C. 42°F D. 4°F
3	If R is gas constant for 1 gram mole, C_pand C_vare specific heat for a solid then	A. C_p- C_v= R B. C_p- C_{v < R} C. C_p- C_{v = 0} D. C_p- C_{v > R}
4	The concept of entropy was introduced into the study of thermodynamics in	A. 1856 B. 1865 C. 1656 D. 1685
5	During the whole carnot cycle	A. Thermal equilibrium is maintained B. mechanical equilibrium is maintained C. both the thermal and mechanical equilibriumis maintained D. both the thermal and mechanical equilibrium is not maintained
6	An amount of water of mass 20 g at 0°C is mixed with 40 g of water at 10°C. Final temperature of mixture is	A. -20°C B. 6.67°C C. 5°C D. 0°C
7	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
8	The curve representing an adiabatic process is called	A. isotherm B. adiabat C. adiable D. none of them
9	Average KE of a gas molecule has:	A. Direct relation with absolute temperature and inverse relation with pressure B. Direction relation with both absolute temperature and pressure C. Inverse relation with both absolute temperature and pressure D. None of these
10	Which of the following is not an example of adiabatic process	A. the rapid escape of air from a burst type B. the rapid expansion and compression of air through which a sound wave is passing C. cloud formation in the atmosphere D. none of them

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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

In the study of thermodynamics, which gas is considered as the working substance

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

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

Triple point of water is

Absolute temperature can be calculated by

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

Average KE of a gas molecule has:

We cannot utilize the heat contents of oceans and atmosphere because

The volume of universal gas constant R is:

Real gases strictly obey gas law at:

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

For the working of a heat engine, there must be

At the constant temperature, if the value of a given mass of a gas is double, then the density of gas becomes:

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

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

Pressure of a gas at constant volume is proportion to

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

Absolute zero is considered as that temperature at which:

The work done by the system on its environment is considered as

The bicycle pump provides a good example of

One kilogram of different substances contain

The temperature of gas is produced by

First law of thermodynamics tells us that heat energy can be converted into equivalent amount of work, but it is silent about

At constant temperature, on increasing the pressure of a gas by 5%, its volume. The final temperature of the gas will be

The concept of entropy was introduced into the study of thermodynamics in

Which of the following is not thermo dynamical function?

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

Boyle's law is applicable in

The only significant motion possessed by the mono-atomic gas represented is:

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

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