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	A process which can be retraced in exactly reverse order, without producing any change in the surroundings is called	A. reversible process B. irreversible process C. any one of them D. none of them
2	First law of thermodynamics is consequence of conservation of	A. Work B. Energy C. Heat D. All of these
3	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
4	If N is the total number of molecules and V is the volume of the container, then the expression for the pressure of gas is	A. P=P/V<1/2mv²> B. P=2N/V<1/2mv²> C. P=2/3N/V<1/2mv²> D. P=2/3N/V<mv²>
5	The value of E₀in coulomb's law is:	A. 9 x 10⁹Nm²C^-2 B. 8.85 x 10^-12C²N^-1m^-2 C. 8.85 x 10^-12Nm²C^-2 D. 9 x 10⁹C²N^-1m^-2
6	When two objects are rubbed together, their internal energy	A. remains same B. decreases C. remains the same then decreases D. increases
7	The highest efficiency of a heat engine whose low temperature is 17°C and the high temperature is 200°C is	A. 70% B. 100% C. 35% D. 38%
8	The volume of a gas will be double of what it is at 0°C (pressure remaining constant) at	A. 546 K B. 273 K C. 546°C D. 273°C
9	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
10	In which process the condition for the application of Boyle's law on the gas is fulfilled	A. isochoric process B. adiabatic process C. isothermal process D. none of them

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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

Pressure may be define as _______ per second per unit area:

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

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

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

The bicycle pump provides a good example of

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

One kilogram of different substances contain

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

Rate of diffusion is

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

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

Internal energy is the sum of all the forms of

The efficiency of diesel engine is

We cannot utilize the heat contents of oceans and atmosphere because

Pressure of a gas at constant volume is proportion to

Absolute zero is considered as that temperature at which:

The ideal gas law is

Efficiency of carnot engine is independent of the

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

In which process the condition for the application of Boyle's law on the gas is fulfilled

The temperature of gas is produced by

Generally a temperature scale is established by

In an adiabatic expansion, the temperature of the gas

At absolute temperature, the kinetic energy of the molecules

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:

In a heat engine, heat is supplied by the

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

Good absorbers of heat are

We can express the work in term of

The concept of entropy was introduced into the study of thermodynamics in

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ECAT Physics Chapter 11 Important MCQ's

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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: