ECAT Pre Engineering Chemistry Chapter 3 MCQ Test With Answer

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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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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
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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 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
2	All gases can be compressed by	A. Keeping constant pressure B. Decreasing pressure C. Increasing pressure D. None of above
3	The deviation of a gas from ideal behavior is maximum at :	A. -10°C and 5.0 atm B. -10°C and 2.0 atm C. 100°C and 2.0 atm D. 0°C and 2.0 atm
4	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
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 relationships between volume of a given amount of gas and the prevailing conditions of temperature and pressure are	A. Charle's Law B. Graham's Law C. Boyle's Law D. Gas Laws
7	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
8	All gases can be compressed by :	A. Keeping constant pressure B. Decreasing pressure C. Increasing pressure D. None of the above
9	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
10	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.

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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

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

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

The molar value of CO2 is maximum at :

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

All gases can be compressed by

Gases show uniform behaviour towards their

Boyle's law is represented as :

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

The rate of diffusion of a gas in

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

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

The highest temperature at which a substance can exist as a liquid is called its

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

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

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

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

Boyle's law does not fall even

The intramolecular forces in gases are

In solids, the temperature of is the measure of

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

In gases and liquids, temperature is the measure of

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

Boyle's law doesn't fail even :

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

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

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

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

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

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

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

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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 :