ECAT Pre Engineering Physics Chapter 11 MCQ Test With Answer

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

D

Deuspeu 25 - Sep - 2024 02 Min 03 Sec 115/120
M

M Umer Arain 19 - Nov - 2024 00 Min 11 Sec 105/120
D

Dr Shahida 01 - Nov - 2024 11 Min 12 Sec 100/120
N

Nitalaya Hassan 24 - Dec - 2024 04 Min 02 Sec 95/120
G

Ghulam Murtaza 12 - Sep - 2024 20 Min 35 Sec 95/120
A

Akshey Lohana 27 - Aug - 2024 14 Min 26 Sec 90/120
U

Umair Rajput 09 - Sep - 2024 15 Min 22 Sec 85/120
I

It's me Sm 26 - Aug - 2024 04 Min 12 Sec 80/120
S

Sania Ahmed 16 - Dec - 2024 04 Min 58 Sec 75/120
K

Kalsoom Memon 20 - Sep - 2024 06 Min 11 Sec 75/120
S

Sanjna Uttwani 21 - Sep - 2024 05 Min 22 Sec 70/120
S

Sudais Khan 12 - Jul - 2024 07 Min 45 Sec 70/120
A

Aakash Rind 07 - Dec - 2024 06 Min 58 Sec 65/120
A

Ali imtiaz 01 - Oct - 2024 07 Min 18 Sec 65/120
R

Rashida Latif 13 - Jan - 2025 07 Min 37 Sec 65/120

Sr.#	Question	Answer
1	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
2	First law of thermodynamic is special case of	A. Law of conservation of energy B. Charle's law C. Law of conservation of mass D. Boyle's law
3	The process which is carried out at constant temperature is known as	A. adiabatic process B. isothermal process C. isochoric process D. none of them
4	Specific heat at constant pressure is greater than the specific heat at constant volume because	A. Heat is used up to increase temperature at constant pressure B. Heat is used by gas for expansions purposes at constant pressure C. Heat is use dup to increase internal energy D. The above statement is invalid
5	Which of the following does not have the same units:	A. Work B. Heat C. Kinetic energy D. Power
6	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
7	A gas is compressed adiabatically till its temperature is double. The ratio of its final volume to initial volume will be	A. 1/2 B. More than 1/2 C. Less than 1/2 D. Between 1 and 2
8	A process is a reversible process, if the entropy of the system	A. increases B. decreases C. remains constant D. none of them
9	The concept of entropy was introduced into the study of thermodynamics in	A. 1856 B. 1865 C. 1656 D. 1685
10	The heat required to raise the temperature of one mole of the substance through 1 K is called	A. heat capacity B. specific heat capacity C. molar specific heat D. all of them
11	A heat engine is that which converts	A. mechanical energy into thermal energy B. thermal energy into mechanical energy C. K.E into potential energy D. heat energy into light energy
12	The ideal gas law is	A. P = nRT B. V = nRT C. PV =RT D. PV =nRT
13	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
14	The absolute temperature of the tripple point of water is	A. 100°C B. 4°C C. 373 K D. 273.16 K
15	During the whole carnot cycle	A. Thermal equilibrium is maintained B. mechanical equilibrium is maintained C. both the thermal and mechanical equilibriumis maintained D. both the thermal and mechanical equilibrium is not maintained
16	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
17	The absolute temperature for an ideal gas is	A. directly proportional to the rotational K.E of gas molecules B. directly proportional to the vibrational K.E of gas molecules C. directly proportional to the average translational K.E.of gas molecules D. directly proportional to the P.E. of gas molecules
18	In the formula P = N₀KT, N₀denotes:	A. Number of molecules per unit per volume B. Number of moles C. Number of molecules D. None of these
19	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
20	At constant temperature, on increasing the pressure of a gas by 5%, its volume. The final temperature of the gas will be	A. 81 K B. 355 K C. 627 K D. 627°C
21	If R is gas constant for 1 gram mole, C_pand C_vare specific heat for a solid then	A. C_p- C_v= R B. C_p- C_{v < R} C. C_p- C_{v = 0} D. C_p- C_{v > R}
22	The number of translation degress of freedom for a diatomic gas is	A. 2 B. 3 C. 5 D. 6
23	Adiabatic change occurs when the gas	A. expands B. compressed C. expands or compressed D. expands or compressed rapidly
24	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
25	An isochoric process is one which take place at	A. Constant internal energy B. Constant entropy C. Constant volume D. Constant pressure
26	Gas constant per molecule is called:	A. Universal gas constant B. Stefen's constant C. Boltzmann constant D. Gravitation constant
27	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
28	The example of irreversible process is	A. slowly liquification B. slowly evaporation C. an explosion D. all of them
29	In an ideal gas, the molecules have:	A. Kinetic energy only B. Potential energy only C. Both KE and PE D. None of these
30	When the temperature of source and sink of a heat engine become equal entropy change will be	A. Zero B. Max C. Min D. -ve

Latest Educational News Stories

Pakistan's Largest Database of Colleges and Universities

BS Programs

University Past Papers

University Results

Exam Results 2024

Study Abroad Programs and Opportunities for Pakistani Students

ECAT Pre Engineering Physics Chapter 11 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 11 Heat & Thermodynamics

Physics ECAT Pre Engineering Chapter 11 Heat & Thermodynamics

At constant volume temperature is increased. Then

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

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

Which of the following is not thermo dynamical function?

A gas which strictly obeys the gas laws under all conditions of temperature and pressure is called:

Average KE of a gas molecule has:

One mole of any substance contain

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

Rice takes longest to cook

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

Generally a temperature scale is established by

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

Brownian motion increases due to

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

The example of reversible process is

Melting point of ice

The percentage of available heat energy converted into work by a petrol engine is roughly

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 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

The ideal gas law is

Specific heat at constant pressure is greater than the specific heat at constant volume because

Which of the following is not an assumption of kinetic energy

The rate of change of momentum of a molecule is equal to:

Rate of diffusion is

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

In a heat engine, heat is supplied by the

The absolute temperature of the tripple point of water is

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

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

The temperature of gas is produced by

Prepare Complete Set Wise Physics ECAT Pre Engineering Chapter 11 Heat & Thermodynamics MCQs Online With Answers

Set 1

Set 2

Set 3

Set 4

Set 5

Set 6

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

Test Questions

Is this page helpful?

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