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 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
2	The percentage of available heat energy converted into work by a diesel engine is roughly	A. 35 %` B. 40 % C. 35 - 40 % D. 25 %
3	The example of reversible process is	A. an explosion B. changes occur suddenly C. slow compression of a gas D. all of them
4	Pressure exerted by a gas is	A. Independent of density of the gas B. Inversely proportional to the density of the gas C. Directly proportional to the square of the density of the gas D. Directly proportional to the density of the gas
5	For making cooking utensils, which of the following pairs of properties is most suited?	A. Low specific heat and high conductivity B. Low specific heat and low conductivity C. High specific heat and high conductivity D. High specific heat and low conductivity
6	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
7	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
8	The relationship between Boltzmann constant k with R and N_Ais given as:	A. k = RN_A B. k =R/N_A C. k = NR/N_A D. None of these
9	We cannot utilize the heat contents of oceans and atmosphere because	A. there is no reservoir at the same temperature B. there is no reservoir at the temperature lower than any one of two C. there is no reservoir at the temperature higher than any one of two D. none of them
10	On the compression stroke of the petrol engine, the inlet value is closed and the mixture is compressed	A. adiabatically B. isothermally C. isochorcally D. isobarically

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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

Average KE of a gas molecule has:

Carnot heat engine only used

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

Heat travels through vacuum by

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

If an amount of heat enters the system it could

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

Electromagnetic waves emitted by hot bodies are called:

An irreversible heat flow from a hot to cold substances of a system, causes the disorder to

In the formula P = N0KT, N0denotes:

The value of E0in coulomb's law is:

The temperature scale approved in SI units is:

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

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

First law of thermodynamic is special case of

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

In a heat engine, heat is supplied by the

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

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

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

On a cold morning a metal surface will fell colder to touch than a wooden surface, because

In an ideal gas, the molecules have:

At absolute temperature, the kinetic energy of the molecules

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

Absolute zero is considered as that temperature at which:

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

Brownian motion increases due to

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

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

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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

Test Questions

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In the formula P = N₀KT, N₀denotes:

The value of E₀in coulomb's law is:

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