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	The temperature of gas is produced by	A. At potential energy of its molecules B. The kinetic energy of its molecules C. The attractive force between its molecules D. The repulsive force between its molecules
2	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	A. A greater than than of B B. A is equal to that of B C. A is less than that of B D. A is twice the pressure of B
3	The absolute temperature for an ideal gas is	A. directly proportional to the rotational K.E of gas molecules B. directly proportional to the vibrational K.E of gas molecules C. directly proportional to the average translational K.E.of gas molecules D. directly proportional to the P.E. of gas molecules
4	Specific heat at constant pressure is greater than the specific heat at constant volume because	A. Heat is used up to increase temperature at constant pressure B. Heat is used by gas for expansions purposes at constant pressure C. Heat is use dup to increase internal energy D. The above statement is invalid
5	If water in a closed bottle is taken up to the moon and opened, the water gets	A. Freeze B. Boiled C. Dissociated into O₂and H₂ D. Evaporated
6	The unit of thermodynamical scale is	A. centigrade B. fahrenheit C. kelvin D. none of them
7	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
8	Pressure may be define as _______ per second per unit area:	A. Change in force B. Change in momentum C. Change in energy D. Work done
9	We can express the work in term of	A. directly measurable variables B. indirectly measurable variables C. either of them D. both of them
10	The absolute temperature of the tripple point of water is	A. 100°C B. 4°C C. 373 K D. 273.16 K

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

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

For the working of a heat engine, there must be

At constant temperature, if the density of the gas is increased, its pressure will:

A real gas can be approximated to an ideal gas at

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

In all natural processes where heat flows from one system to another, there is always a net

If an amount of heat enters the system it could

Tick the correct pair when M denotes the molecular mass and other symbols carry usual meanings:

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

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

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

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

Energy gas behaves like an ideal gast at

A heat engine is that which converts

Generally a temperature scale is established by using certain physical properties of a material which varies

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

In a heat engine, heat is supplied by the

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

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

First law of thermodynamics is consequence of conservation of

In thermodynamics, internal energy is the function of

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 an ideal gas, the molecules have:

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

If a system undergoes a natural process it will go in the direction that causes the entropy of the system plus the environment to increase, this is another statement of

One kilogram of different substances contain

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

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

Absolute zero is considered as that temperature at which:

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ECAT Physics Chapter 11 Important MCQ's

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