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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ECAT Physics Chapter 11 Important MCQ's

Sr.#	Question	Answer
1	The process which is carried out at constant temperature is known as	A. adiabatic process B. isothermal process C. isochoric process D. none of them
2	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	A. Clausius statement of second law B. Kelvin'sstatement of second law C. Clausius statement of first law D. Kelvin's statement of first law
3	Generally a temperature scale is established by using certain physical properties of a material which varies	A. nonlinearly with temperature B. linearly with temperature C. either of them D. none of them
4	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	A. second law thermodynamics B. first law of thermodynamics C. third law of thermodynamics D. none of them
5	The volume of universal gas constant R is:	A. 8.314 J/K mole K B. 8314 J/K mole K C. 8.314 J/mole K D. None of these
6	On a cold morning a metal surface will fell colder to touch than a wooden surface, because	A. Metal has high specific heat B. Metal has high thermal conductivity C. Metal has low specific heat D. Metal has low thermal conductivity
7	Rate of diffusion is	A. Faster in solids than in liquids and gases B. Faster in liquids than in solids and gases C. Equal to solids, liquids and gases D. Faster in gases than in liquids and solids
8	The example of irreversible process is	A. slowly liquification B. slowly evaporation C. an explosion D. all of them
9	Which quantity is important in stating the entropy of the system	A. initial entropy B. final entropy C. change in entropy D. none of them
10	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

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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

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

Pressure exerted by a gas is

At absolute temperature, the kinetic energy of the molecules

First law of thermodynamics is consequence of conservation of

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

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

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

The volume of a gas will be double of what it is at 0°C (pressure remaining constant) at

One kilogram of different substances contain

The example of reversible process is

Maximum density of H2O is at the temperature

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

Triple point of water is

Pressure of a gas at constant volume is proportion to

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

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

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

Absolute zero is considered as that temperature at which:

The coefficient of linear expansion of iron is 0.000011 per°K. An iron rod is 10 metre long at 27°C. The length of the rod will be decreased by 1.1 mm when the temperature of the rod changes to

R.M.S velocity of a particle is V at pressure P. If pressure increases by two times, then R.M.S velocity becomes

The nature of thermal radiation is similar to:

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

The absolute temperature for an ideal gas is

The state in which ice, water and vapour coexists in equilibrium is called

The product of the pressure and volume of an ideal gas is

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

For making cooking utensils, which of the following pairs of properties is most suited?

Brownian motion increases due to

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

If a liquid is heated in weightlessness, the heat is transmitted through

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Top Scorers Of Physics ECAT Pre Engineering Chapter 11 Heat & Thermodynamics MCQ`s Test

ECAT Physics Chapter 11 Important MCQ's

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Maximum density of H₂O is at the temperature