ECAT Pre Engineering Chemistry Chapter 3 MCQ Test With Answer

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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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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	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.
2	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
3	In gases and liquids, temperature is the measure of :	A. Average transnational kinetic energies of molecules. B. Average vibrational kinetic energies of molecules. C. Average rotational kinetic energies of molecules. D. None of above
4	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
5	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
6	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.
7	In Boyle's law which of the following pair is variable	A. Temperature and quantity of a gas B. Pressure and Volume C. Volume and quantity of a gas D. Pressure and quantity of a gas
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	Which of the following is the simplest form of matter?	A. Gaseous state B. Liquid State C. Solid State D. All of above
10	The intramolecular force in gases are :	A. Weak B. Normal C. Very weak D. Strong

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

In gases and liquids, temperature is the measure of :

In gases and liquids, temperature is the measure of

Gases shows uniform behavior toward their :

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

Boyle's law does not fall even

Which of the following is the simplest form of matter?

In Solids, the temperature is the measure of

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

Which statement about gases is not correct ?

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

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

Absolute temperature of a gas is proportional to

Cooling happens under the Joule Thomson Effect due to sudden :

All gases can be compressed by :

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

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

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

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

Cooling happens under the Joule Thomson Effect due to sudden

Gases show uniform behaviour towards their

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

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 :

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 x-axis, when we plot a graph between

All gases can be compressed by

Gases exert pressure on walls of container because the gas molecules

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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ECAT Chemistry Chapter 3 Important MCQ's

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