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
R

rehan sanaullah 06 - Jun - 2024 05 Min 12 Sec 105/120
M

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
K

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
E

Eraj Abeer 18 - Dec - 2024 04 Min 19 Sec 75/120

ECAT Chemistry Chapter 3 Important MCQ's

Sr.#	Question	Answer
1	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.
2	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
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	According to Boyle's law. which parameters give a straight line parallel to x-axis, when we plot a graph between	A. V and T B. P and V C. P and 1/V D. P and PV
5	The movement of molecules from a region of high pressure to vacuum is called :	A. Evaporation B. Effusion C. Conduction D. Difusion
6	The order of the rate of diffusion of gases NH₃,SO₂, CL₂, and CO₂ IS :	A. NH_{3 >}SO_{2 >}CL_{2 >}CO₂ B. NH_{3 >}CO_{2 >}SO_{2 >}CL₂ C. CL_{2 >}SO_{2 >}CO_{2 >}NH₃ D. NH_{3 >}CO₂_>CL_{2 >}SO₂
7	A graph between P and 1/V at constant temperature and number moles of a gas meets the	A. y-axis B. x-axis C. origin 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	Liquids are less common than	A. Solids B. Plasmas C. Gases D. All of above
10	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

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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 intramolecular force in gases are :

In solids, the temperature of is the measure of

The molar value of CO2 is maximum at :

Liquids are less common than

Liquids are less common than :

The intramolecular forces in gases are

Keeping the temperature constant, if the gas is expanded

In Solids, the temperature is the measure of

The rate of diffusion of a gas in

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

In gases and liquids, temperature is the measure of :

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

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

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

Gases show uniform behaviour towards their

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 :

Which of the following is the simplest form of matter?

Gases deviate from ideal behavior at high pressure. Which of the following is correct for non-ideality ?

Cooling happens under the Joule Thomson Effect due to sudden :

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

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

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

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

Cooling happens under the Joule Thomson Effect due to sudden

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

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

All gases can be compressed by

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

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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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The molar value of CO₂is maximum at :

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