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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Fatima Tabassum 11 - Jan - 2025 02 Min 30 Sec 115/120
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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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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	According to Boyle's law, which parameters give a straight line parallel to axis-s, when we plot a graph between:	A. V and T B. P and V C. P and 1/V D. P and PV
2	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
3	Absolute temperature of a gas is proportional to	A. Rotational kinetic energy B. Translational kinetic energy C. Vibrational kinetic energy D. Potential energy
4	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.
5	The rate of diffusion of a gas is :	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
6	Gases show uniform behaviour towards their	A. Internal conditions B. External conditions C. Internal and external conditions D. None of above
7	A real gas obeying van der Waals' equation will resemble ideal gas if :	A. both 'a' and 'b' are large B. both 'a' and 'b' are small C. 'a' is small and 'b' is large D. 'a' is large and 'b' is small
8	Which of the following is the simplest form of matter?	A. Gaseous state B. Liquid state C. Solid state D. All of above
9	In Boyle's law which of the following pair remains constant :	A. Temperature and quality of a gas. B. Pressure and quality of a gas. C. Temperature and pressure D. Temperature and quantity of a gas.
10	A graph between P and PV at constant temperature and number of mole is parallel to	A. y axis B. z axis C. x axis D. pressure axis

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

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

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

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

In solids, the temperature of is the measure of

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

In gases and liquids, temperature is the measure of

Boyle's law doesn't fail even :

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

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

All gases can be compressed by :

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

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

Keeping the temperature constant, if the gas is expanded

The intramolecular forces in gases are

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

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

In Solids, the temperature is the measure of

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 remains constant :

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

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

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

The molar value of CO2 is maximum at :

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

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

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

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

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

Liquids are less common than :

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ECAT Chemistry Chapter 3 Important MCQ's

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The molar value of CO₂is maximum at :