ECAT Pre General Science Chapter 11 online mcq test with answers for Physics chapter 11 (Heart & Thermodynamics)

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Malik Farhan 26 - Jan - 2019 08 Min 09 Sec 80/120
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Waleed Ahmed 24 - Feb - 2023 05 Min 43 Sec 50/120
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Maliha afridi 25 - Oct - 2018 11 Min 47 Sec 50/120
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hamza abid 27 - Jan - 2022 10 Min 50 Sec 20/120
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Mohsin rajput Rajput 21 - Sep - 2025 06 Min 38 Sec 9/30
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Frankie 09 - Sep - 2022 01 Min 29 Sec 0/120

ECAT Physics Chapter 11 Important MCQ's

Sr.#	Question	Answer
1	A gas which strictly obeys the gas laws under all conditions of temperature and pressure is called:	A. Ideal gas B. Inert gas C. Real gas D. None of these
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	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
4	The disorder in the system increases due to the	A. removal of heat B. addition of heat C. removal or addition of heat D. none of them
5	While deriving equation of pressure by kinetic theory of gases, we take into account:	A. Only linear motion of molecules B. Only rotational motion C. Only vibratory motion D. All of these
6	When two objects are rubbed together, their internal energy	A. remains same B. decreases C. remains the same then decreases D. increases
7	Since the absolute scale is independent of the property of the working substance, hence, can be applied at	A. very high temperature B. very low temperature C. any one of them D. none of them
8	One mole of any substance contain	A. same number of molecules B. different number of molecules C. may be same or different D. none of them
9	A process in which no heat enters or leaves the system is called	A. isochoric process B. isothermal process C. adiabatic process D. none of them
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 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

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

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

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

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

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

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

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

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

In the reverse process, the working substance passes through the same stages as in the direct process and

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

A carnot cycle consists of

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

A typical four stroke petrol engine undergoes how many successive processes in each cycle

A process is a reversible process, if the entropy of the system

The Boltzman constant has the value

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

Carnot heat engine only used

We cannot utilize the heat contents of oceans and atmosphere because

If R is gas constant for 1 gram mole, Cpand Cvare specific heat for a solid then

The absolute temperature for an ideal gas is

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

The behaviour of gases is well accounted by the kinetic theory based on

Triple point of water is

If denotes the total number of molecules in cubic vessel such that m is mass of each milecule and I is length of each side of vessel, then mN/I3gives the:

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

The temperature scale approved in SI units is:

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

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

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

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

ECAT Physics Chapter 11 Important MCQ's

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If R is gas constant for 1 gram mole, C_pand C_vare specific heat for a solid then

If denotes the total number of molecules in cubic vessel such that m is mass of each milecule and I is length of each side of vessel, then mN/I³gives the: