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	The movement of molecules from a region of high pressure to vacuum is called :	A. Evaporation B. Effusion C. Conduction D. Difusion
2	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
3	Which of the following will have the same number of molecules at STP ?	A. 280 CM³ of CO² and 280 CM³ of N₂O B. 11.2 dm3 of O₂ and 32 g of O₂ C. 44 g of CO₂ and 11.2 dm³ of CO D. 28 g of N2 and 5.6 dm³ of oxygen
4	Absolute temperature of a gas is proportional to	A. Rotational kinetic energy B. Translational kinetic energy C. Vibrational kinetic energy D. Potential energy
5	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
6	The intramolecular forces in gases are	A. Weak B. Normal C. Very weak D. Strong
7	The density of a gas is directly and volume at constant temperature for a gas is	A. Isobaric B. Isothermal C. Isotherm D. None of above
8	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
9	The rate of diffusion of a gas in	A. Inversely proportional to its density B. Inversely proportional to square root of its molecular mass C. Directly proportional to molecular mass D. Directly proportional to its density
10	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

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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 remains constant

Cooling happens under the Joule Thomson Effect due to sudden :

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

All gases can be compressed by :

Which of the following is the simplest form of matter?

Boyle's law doesn't fail even :

All gases can be compressed by

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

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

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

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

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

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

In Solids, the temperature is the measure of

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

Boyle's law does not fall even

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

Which Statement about gases is not correct?

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

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

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

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

In solids, the temperature of is the measure of

Liquids are less common than

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

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

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

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

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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 :