ECAT Pre Engineering Physics Chapter 11 MCQ Test With Answer

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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	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
3	A heat engine is that which converts	A. mechanical energy into thermal energy B. thermal energy into mechanical energy C. K.E into potential energy D. heat energy into light energy
4	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
5	On the exaust stroke, the outlet values opens. The residual gases are expelled and piston moves	A. outwards B. inwards C. in either way D. none of these
6	If the formula PV = nRT, n denotes:	A. Number of molecules per unit volume B. Number of moles C. Number of molecules D. None of these
7	R.M.S velocity of a particle is V at pressure P. If pressure increases by two times, then R.M.S velocity becomes	A. 2V B. 3V C. 0.5V D. V
8	The rate of change of momentum of a molecule is equal to:	A. Pressure B. Work C. Density D. Force
9	The pressure of gas everywhere inside the vessel will be the same provided the gas is of	A. Non-uniform density B. uniform density C. high density D. low density
10	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

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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

A carnot cycle consists of

The length of a metallic rod is 5 meter at 100°C. The coefficient of cubical expansion of the metal will be

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

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

The example of reversible process is

Electromagnetic waves emitted by hot bodies are called:

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

The heat required to raise the temperature of one mole of the substance through 1 K is called

Energy gas behaves like an ideal gast 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

Which of the following is not an example of adiabatic process

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

In an adiabatic process the work is done at the expense of the

A gas which strictly obeys the gas laws under all conditions of temperature and pressure is called:

In the formula P = N0KT, N0denotes:

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

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

While deriving equation of pressure by kinetic theory of gases, we take into account:

In an adiabatic expansion, the temperature of the gas

Rice takes longest to cook

On the exaust stroke, the outlet values opens. The residual gases are expelled and piston moves

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

We can express the work in term of

The kinetic energy of one molecule of a gas at normal temperature and pressure will be (k = 8.31 J/mole K) :

On the compression stroke of the petrol engine, the inlet value is closed and the mixture is compressed

On colliding in a closed container, the gas molecules

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

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

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

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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ECAT Physics Chapter 11 Important MCQ's

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Bilal A Munir

In the formula P = N₀KT, N₀denotes: