ECAT Pre Engineering Chemistry Chapter 3 MCQ Test With Answer

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

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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
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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
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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
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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	Gases deviate from ideal behavior at high pressure. Which of the following is correct for non-ideality ?	A. At high pressure, the gas molecules move in one direction only. B. At high pressure, the collisions between the gas molecules are increased manifold. C. At high pressure, the volume of gas becomes insignificant. D. At high pressure, the inter molecular attraction become significant.
2	The relationships between volume of a given amount of gas and the prevailing conditions of temperature and pressure are	A. Charle's Law B. Graham's Law C. Boyle's Law D. Gas Laws
3	If absolute temperature of a gas is doubled and the pressure is reduced to one half, the volume of gas will :	A. remain unchanged B. increase four times C. reduce to 1/4 D. be doubled
4	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
5	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
6	Boyle's law is represented as :	A. P∞ 1/T B. V and 1/P C. P∞P D. P∞1/P
7	Gases show uniform behaviour towards their	A. Internal conditions B. External conditions C. Internal and external conditions D. None of above
8	Which Statement about gases is not correct?	A. They spread throughout the vessel B. Pressure is due to collision C. There are larger spaces between the molecules D. Molecules are arranged regularly
9	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.
10	For a gas obeying Boyle's law if pressure is doubled, the volume becomes	A. Remains constant B. Double C. One half D. None of above

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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 Boyle's law which of the following pair is variable

According to Boyle's law. which parameters give a straight line parallel to x-axis, when we plot a graph between

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

The relationships between volume of a given amount of gas and the prevailing conditions of temperature and pressure are

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

Gases of air always remain in random motion and do not settle due to :

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

A graph between P and 1/V at constant temperature and number moles of a gas meets the

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

Equal masses of methane and oxygen are mixed in an empty container at 25°CThe fraction of total pressure exerted by oxygen is :

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

The order of the rate of diffusion of gases NH3,SO2, CL2, and CO2 IS :

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

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

Absolute temperature of a gas is proportional to

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

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

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

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

Gases shows uniform behavior toward their :

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

Liquids are less common than :

How should condition be changed to prevent the volume of a given gas from expanding whine its mass is increased ?

Gases exert pressure on walls of container because the gas molecules

The ratio of volume to temperature on Kelvin scale is constant according to

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

The highest temperature at which a substance can exist as a liquid is called its

Boyle's law doesn't fail even :

Gases of air, always remain in random motion and do not settle due to

In solids, the temperature of is the measure of

Prepare Complete Set Wise ECAT Chemistry Chapter 3 Gases MCQs Online With Answers

Set 1

Set 2

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

ECAT Chemistry Chapter 3 Important MCQ's

Test Questions

The order of the rate of diffusion of gases NH₃,SO₂, CL₂, and CO₂ IS :