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 second law of thermodynamics is concerned with the circumstances in which	A. heat can be converted into work B. direction of flow of heat C. none of them D. both of them
2	Truth of kinetic energy is confirmed by:	A. Diffusion of gases B. Brownian motion C. Both A and B D. None of these
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	In case of an ideal gas, the P.E associated with its molecule is	A. maximum B. zero C. minimum D. not fixed
5	Melting point of ice	A. Increases with increasing pressure B. Decreases with increasing pressure C. Is independent of pressure D. Is proportional to pressure
6	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	A. 300°C B. 573°C C. 600°C D. 743°C
7	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
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	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	A succession of events which bring the system back to its initial condition is called	A. reversible process B. irreversible process C. a cycle 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

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

Amount of heat required to raise the temperature of a body through 1 K is called its

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

No spark plug is needed in

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

Which of the following is not an assumption of kinetic energy

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

Rate of diffusion is

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

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

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

The relationship between Boltzmann constant k with R and NAis given as:

Boyle's law is applicable in

The only significant motion possessed by the mono-atomic gas represented is:

If an amount of heat enters the system it could

At the constant temperature, if the value of a given mass of a gas is double, then the density of gas becomes:

The Boltzman constant has the value

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

In the formula P = N0KT, N0denotes:

First law of thermodynamics is consequence of conservation of

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:

When two objects come to common temperature, the body is said to be in:

A real gas can be approximated to an ideal gas at

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

The earliest heat engine was

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

We can express the work in term of

Electromagnetic waves emitted by hot bodies are called:

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

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ECAT Physics Chapter 11 Important MCQ's

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The relationship between Boltzmann constant k with R and N_Ais given as:

In the formula P = N₀KT, N₀denotes:

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: