ECAT Pre Computer Science Chapter 11 MCQ Test With Answer

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

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Abdullah Baloch 28 - Jul - 2024 06 Min 01 Sec 60/60
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Vertex Gaming 16 - Jul - 2024 01 Min 06 Sec 55/60
A

Ali Kumail 29 - May - 2024 01 Min 41 Sec 55/60
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Muhammad Abdur.Rahman Khan 28 - Aug - 2024 02 Min 51 Sec 55/60
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Mian House 31 - May - 2024 06 Min 26 Sec 55/60
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Muhammad Hashim 02 - Jun - 2024 02 Min 29 Sec 50/60
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Mian amar Mustafa 09 - Feb - 2024 03 Min 05 Sec 50/60
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suzi 09 - Feb - 2026 02 Min 10 Sec 48/60
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Atif Murad 11 - Mar - 2024 01 Min 46 Sec 45/60
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HUSSAIN Mudasser 24 - Jun - 2024 02 Min 24 Sec 40/60
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Ayan Shuaib 30 - Jan - 2024 03 Min 08 Sec 40/60
A

Astha 01 - Feb - 2024 06 Min 49 Sec 40/60
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Night Rrrider 30 - Jan - 2026 02 Min 14 Sec 36/60
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urooj urooj 17 - Jul - 2024 02 Min 12 Sec 35/60
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Kashif Siddiqui 14 - Sep - 2024 03 Min 17 Sec 35/60

ECAT Physics Chapter 11 Important MCQ's

Sr.#	Question	Answer
1	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
2	In the reverse process, the working substance passes through the same stages as in the direct process and	A. thermal effects at each stage are exactly reversed B. mechanical effects at each stage are exactly reversed C. thermal and mechanical effects at each stage remain the same D. thermal and mechanical effects at each stage are exactly reversed
3	On the power stroke, a spark fires the mixtures causing a rapid increase in pressure and temperature and the burning mixture expands	A. adiabatically B. isothermally C. isochorically D. isobarically
4	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%
5	No spark plug is needed in	A. petrol engine B. diesel engine C. both of them D. none of them
6	Electromagnetic waves emitted by hot bodies are called:	A. Photoelectrons B. Alpha rays C. Thermal radiation D. None of these
7	If water in a closed bottle is taken up to the moon and opened, the water gets	A. Freeze B. Boiled C. Dissociated into O₂and H₂ D. Evaporated
8	The curve representing an isothermal process is called	A. adiabat B. isotherm C. fixed temperature D. none of them
9	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
10	A process in which no heat enters or leaves the system is called	A. isochoric process B. isothermal process C. adiabatic process D. none of them

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ECAT Pre Computer Science Chapter 11 MCQ Test With Answer

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

ECAT Physics Chapter 11 Heat & Thermodynamics

The motion of molecules in gases is:

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

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

When two objects are rubbed together, their internal energy

For the working of a heat engine, there must be

The second law of thermodynamics is concerned with the circumstances in which

In an adiabatic expansion, the temperature of the gas

Rice takes longest to cook

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 an ideal gas, the molecules have:

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

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

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

The temperature of gas is produced by

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

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

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: