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	At what temperature the adiabatic change is equivalent to the isothermal change?	A. Zero degree Celsius B. Zero Kelvin C. Critical temperature D. Above critical temperature
2	At the constant temperature, if the value of a given mass of a gas is double, then the density of gas becomes:	A. Double B. Remains constant C. Half D. None of these
3	First law of thermodynamics is consequence of conservation of	A. Work B. Energy C. Heat D. All of these
4	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}
5	The heat required to raise the temperature of one mole of the substance through 1 K is called	A. heat capacity B. specific heat capacity C. molar specific heat D. all of them
6	Amount of heat required to raise the temperature of a body through 1 K is called its	A. Specific heat B. Water equivalent C. Thermal capacity D. Entropy
7	A typical four stroke petrol engine undergoes how many successive processes in each cycle	A. one B. two C. three D. four
8	The curve representing an isothermal process is called	A. adiabat B. isotherm C. fixed temperature D. none of them
9	When the temperature of source and sink of a heat engine become equal entropy change will be	A. Zero B. Max C. Min D. -ve
10	Hotness and coldness of an object is represented in terms:	A. Heat B. Temperature C. Chemical energy 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

Heat required to raise the temperature of one mole of a gas through 1 K at constant pressure is called

Truth of kinetic energy is confirmed by:

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

On the power stroke, a spark fires the mixtures causing a rapid increase in pressure and temperature and the burning mixture expands

The pressure exerted by the gas is

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

Heat travels through vacuum by

The motion of molecules in gases is:

In an adiabatic expansion, the temperature of the gas

For the working of a heat engine, there must be

The number of translation degress of freedom for a diatomic gas is

The unit of thermodynamical scale is

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

The temperature scale approved in SI units is:

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

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

Generally a temperature scale is established by

If a process cannot be retraced in the backward direction by reversing the controlling factors, it is

In thermodynamics, internal energy is the function of

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

Which of the following is not an example of adiabatic process

The disorder in the system increases due to the

Absolute temperature can be calculated by

A carnot cycle consists of

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

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

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

10 c.c. each of oxygen and hydrogen are kept in separate flasks. Then which of the following relations is correct?

The percentage of available heat energy converted into work by a petrol engine is roughly

Sadi carnot described an ideal heat engine in

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ECAT Physics Chapter 11 Important MCQ's

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