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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Malik Farhan 23 - May - 2021 07 Min 14 Sec 35/120
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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	If the volume of the gas is to be increased by 4 times, then	A. Temperature and pressure must be doubled B. At constant P the temperature must be increased by 4 times C. At constant T the pressure must be increased by four times D. It cannot be increased
2	When heat is added into the system then change in entropy is	A. negative B. positive C. zero D. any one of them
3	First law of thermodynamics tells us that heat energy can be converted into equivalent amount of work, but it is silent about	A. how heat is absorbed B. how heat extracted C. how this conversion takes place D. none of them
4	The heat required to raise the temperature of one mole of the gas through 1 K at constant volume is called	A. heat capacity B. specific heat capacity C. molar specific heat D. molar specific heat at constant volume
5	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
6	For the working of a heat engine, there must be	A. a source of heat at high temperature B. a sink at low temperature C. both of them D. none of them
7	The efficiency of petrol engine is usually not more than 25% to 30% because of	A. friction B. heat losses C. both of them D. none of them
8	Which of the following is not thermo dynamical function?	A. Enthalpy B. Work done C. Gibb's energy D. Internal energy
9	What temperature is the same on Celsius scale as well as on Fahrenheit scale?	A. 32°C B. -32°C C. -40°C D. -212°C
10	On the exaust stroke, the outlet values opens. The residual gases are expelled and piston moves	A. outwards B. inwards C. in either way D. none of these

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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

A diatomic gas molecule has

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

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

Efficiency of carnot engine is independent of the

An isochoric process is one which take place at

The example of irreversible process is

If an amount of heat enters the system it could

While deriving the equation for pressure of a gas we consider the

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

Triple point of water is

When heat is added into the system then change in entropy is

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

At constant temperature, on increasing the pressure of a gas by 5%, its volume. The final temperature of the gas will be

Adiabatic change occurs when the gas

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

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

If 42 J heat is transferred to the system and the work done by the system is 32 J then what will be the change in internal energy

Which of the following does not have the same units:

At absolute temperature, the kinetic energy of the molecules

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

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

The disorder in the system increases due to the

For the working of a heat engine, there must be

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

The Boltzman constant has the value

On colliding in a closed container, the gas molecules

In thermodynamics, internal energy is the function of

When heat is removed from the system

Brownian motion increases due to

Average KE of a gas molecule has:

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ECAT Physics Chapter 11 Important MCQ's

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