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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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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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	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
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	The molar value of CO₂is maximum at :	A. STP B. 127°C and 1 atm C. 0°C and 2 atm D. 273°C and 2 atm
4	All gases can be compressed by :	A. Keeping constant pressure B. Decreasing pressure C. Increasing pressure D. None of the above
5	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.
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 exert pressure on walls of container because the gas molecules	A. Obey gas laws B. Have definite volume C. Collide with the walls of container D. Collide with each other
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	In solids, the temperature of is the measure of	A. Rotational kinetic energies B. transnational kineticenergies C. Vibrationalkineticenergies D. None of the above
10	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

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

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

In gases and liquids, temperature is the measure of :

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

Cooling happens under the Joule Thomson Effect due to sudden :

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

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

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

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

Keeping the temperature constant, if the gas is expanded

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

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

Liquids are less common than :

All gases can be compressed by :

Gases show uniform behaviour towards their

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

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

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

Which Statement about gases is not correct?

The molar value of CO2 is maximum at :

Gases exert pressure on walls of container because the gas molecules

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

The rate of diffusion of a gas in

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

The intramolecular force in gases are :

Cooling happens under the Joule Thomson Effect due to sudden

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

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

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

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

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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 :

The molar value of CO₂is maximum at :