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
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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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kayani 17 - Jul - 2024 07 Min 39 Sec 95/120
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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
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Yasmeen Ashraf 04 - Jun - 2024 06 Min 46 Sec 75/120

ECAT Chemistry Chapter 3 Important MCQ's

Sr.#	Question	Answer
1	Keeping the temperature constant, if the gas is expanded	A. kinetic energy of molecules will increase B. Number of gas molecules increases C. Temperature will increases D. Pressure will decrease
2	The ratio of volume to temperature on Kelvin scale is constant according to	A. Charle's law B. Newton's law C. Coulomb's law D. Boyle's law
3	In Boyle's law which of the following pair remains constant	A. Temperature and quality of a gas B. Pressure and quality of a gas C. Temperature and pressure D. Temperature and quantity of a gas
4	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.
5	The density of a gas is directly proportional to pressure, inversely proportional to temperature and directly proportional to	A. Viscosity B. Molar mass C. Momentum D. All of above
6	Gases shows uniform behavior toward their :	A. Internal conditions B. External conditions C. Internal and external conditions D. None of above
7	Which statement about gases is not correct ?	A. The spread throughout the vessel. B. Pressure is due to collision C. There are large spaces between the molecules. D. molecules are arranged regularly.
8	A real gas obeying van der Waals' equation will resemble ideal gas if :	A. both 'a' and 'b' are large B. both 'a' and 'b' are small C. 'a' is small and 'b' is large D. 'a' is large and 'b' is small
9	For a gas obeying Boyle's law if pressure is doubled, the volume becomes :	A. Remain constant B. Double C. One half D. None of above
10	Boyle's law is represented as :	A. P∞ 1/T B. V and 1/P C. P∞P D. P∞1/P

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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

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

The molar value of CO2 is maximum at :

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

Gases show uniform behaviour towards their

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

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

Liquids are less common than

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

Gases exert pressure on walls of container because the gas molecules

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

The rate of diffusion of a gas is :

Which of the following will have the same number of molecules at STP ?

In solids, the temperature of is the measure of

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

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

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

The intramolecular force in gases are :

In Boyle's law which of the following pair is variable :

The intramolecular forces in gases are

In gases and liquids, temperature is the measure of :

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

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

The relation ships b/w volume of given amount of gas and prevailing conditions of temperature and pressure are :

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

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

Boyle's law doesn't fail even :

Absolute temperature of a gas is proportional to

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

Which of the following is the simplest form of matter?

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

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ECAT Chemistry Chapter 3 Important MCQ's

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The molar value of CO₂is maximum at :

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