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
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
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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	Liquids are less common than	A. Solids B. Plasmas C. Gases D. All of above
2	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
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 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
5	If absolute temperature of a gas is doubled and the pressure is reduced to one half, the volume of the gas will be	A. Remain unchanged B. Doubled C. Reduced D. Increased four times
6	A graph b/w P and 1/V at constant temperature and number of moles is parallel to :	A. Y-axis B. Z-axis C. X-axis D. None of above
7	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
8	Boyle's law does not fall even	A. Temperature is extremely high B. Pressure is extremely high C. Mixture of gases is taken D. all of above
9	Equal masses of methane and oxygen are mixed in an empty container at 25°CThe fraction of total pressure exerted by oxygen is :	A. 1/2 B. 8/9 C. 1/9 D. 16/17
10	The relation ships b/w volume of given amount of gas and prevailing conditions of temperature and pressure are :	A. Charles's law B. Graham's law C. Boyle's law D. Gas law

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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

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

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

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

Which Statement about gases is not correct?

The intramolecular force in gases are :

In Boyle's law which of the following pair remains constant

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

The intramolecular forces in gases are

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

Gases exert pressure on walls of container because the gas molecules

Which statement about gases is not correct ?

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

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

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

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

All gases can be compressed by

Gases exert pressure on walls of container because the gas molecules :

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

Boyle's law is represented as :

In gases and liquids, temperature is the measure of

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

The rate of diffusion of a gas is :

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

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

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

In Solids, the temperature is the measure of

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

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

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

All gases can be compressed by :

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