ECAT Pre Engineering Chemistry Chapter 3 MCQ Test With Answer

Top Scorers Of ECAT Chemistry Chapter 3 Gases MCQ`s Test

A

Abdullah Zubair 17 - Dec - 2024 04 Min 34 Sec 120/120
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Khalida Amjad 23 - Oct - 2024 01 Min 52 Sec 115/120
F

Fatima Tabassum 11 - Jan - 2025 02 Min 30 Sec 115/120
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rehan sanaullah 06 - Jun - 2024 05 Min 12 Sec 105/120
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Muhammad Abubakar 25 - Oct - 2024 14 Min 32 Sec 105/120
A

AS creations 16 - Jun - 2026 07 Min 11 Sec 96/120
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Umar Saeed 21 - Jul - 2024 02 Min 11 Sec 95/120
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kayani 17 - Jul - 2024 07 Min 39 Sec 95/120
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notghouri playz 16 - Dec - 2024 16 Min 23 Sec 95/120
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Mirza Abdullah 11 - Jun - 2024 04 Min 21 Sec 90/120
A

Aman Fatima 03 - Jan - 2026 17 Min 21 Sec 88/120
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Laiba Jawad 21 - Sep - 2024 07 Min 29 Sec 80/120
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M Saifullah 02 - Jul - 2024 12 Min 19 Sec 80/120
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Shazi Ansari 05 - Jun - 2024 03 Min 12 Sec 75/120
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Eraj Abeer 18 - Dec - 2024 04 Min 19 Sec 75/120

ECAT Chemistry Chapter 3 Important MCQ's

Sr.#	Question	Answer
1	Liquids are less common than	A. Solids B. Plasmas C. Gases D. All of above
2	The movement of gas molecules from a region of high pressure to vacuum is called	A. Evaportation B. Effusion C. Conduction D. Diffusion
3	Gases of air always remain in random motion and do not settle due to :	A. Difference in molecular masses of air gases. B. Difference in partial pressure of gas molecules. C. Unequal number of different gas molecules. D. Elastic collision of gas molecules.
4	The rate of diffusion of a gas is :	A. Inversely proportional to its density B. Inversely proportional to square root of its molecular mass C. Directly proportional to molecular mass D. Directly proportional to its density
5	In Boyle's law which of the following pair is variable :	A. Temperature and quantity of a gas. B. Pressure and volume C. Volume and quantity of a gas. D. Pressure and quantity of a gas.
6	The highest temperature at which a substance can exist as a liquid is called its	A. Critical temperature B. Zero temperature C. Absolute temperature D. None of above
7	Number of molecules in one dm³of water is close to :	A. 6.02/22.4 B. 12.04/22.4 10²³ C. 18/22.410²³ D. 55.66.0210²³* 10²³
8	In gases and liquids, temperature is the measure of	A. Average translational kinetic energies of molecules B. Average vibrational kinetic energies of molecules C. Average rotational kinetic energies of molecules D. None of above
9	Gases show uniform behaviour towards their	A. Internal conditions B. External conditions C. Internal and external conditions D. None of above
10	The movement of molecules from a region of high pressure to vacuum is called :	A. Evaporation B. Effusion C. Conduction D. Difusion

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ECAT Pre Engineering Chemistry Chapter 3 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 3 Gases

ECAT Chemistry Chapter 3 Gases

In solids, the temperature of is the measure of

The density of a gas is directly proportional to pressure, inversely proportional to temperature and directly proportional to

Number of molecules in one dm3 of water is close to :

The density of a gas is directly and volume at constant temperature for a gas is

The product of pressure and volume remains constant when temperature and quantity of gas is

All gases can be compressed by :

Which of the following is the simplest form of matter?

For a gas obeying Boyle's law if pressure is doubled, the volume becomes :

A real gas obeying van der Waals' equation will resemble ideal gas if :

Gases show uniform behaviour towards their

At constant temperature when pressure of a gas is plotted against volume, the curve is

A graph b/w P and 1/V at constant temperature and number of moles is parallel to :

Boyle's law does not fall even

In gases and liquids, temperature is the measure of

Liquids are less common than :

All gases can be compressed by

The intramolecular force in gases are :

A graph between P and PV at constant temperature and number of mole is parallel to

Pressure remaining constant, at which temperature volume of gas will become twice of what it is at 0°C ?

The molar value of CO2 is maximum at :

Gases exert pressure on walls of container because the gas molecules

Which Statement about gases is not correct?

The deviation of a gas from ideal behavior is maximum at :

The deviation of a gas from ideal behavior is maximum at :

If absolute temperature of a gas is doubled and the pressure is reduced to one half, the volume of gas will :

The movement of molecules from a region of high pressure to vacuum is called :

Cooling happens under the Joule Thomson Effect due to sudden :

The graph between pressure and volume at constant temperature for a gas is

In Solids, the temperature is the measure of

In gases and liquids, temperature is the measure of :

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Top Scorers Of ECAT Chemistry Chapter 3 Gases MCQ`s Test

ECAT Chemistry Chapter 3 Important MCQ's

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Number of molecules in one dm³of water is close to :

The molar value of CO₂is maximum at :