ECAT Pre Engineering Chemistry Chapter 3 MCQ Test With Answer

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A

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Fatima Tabassum 11 - Jan - 2025 02 Min 30 Sec 115/120
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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	If absolute temperature of a gas is doubled and the pressure is reduced to one half, the volume of the gas will be	A. Remain unchanged B. Doubled C. Reduced D. Increased four times
2	In solids, the temperature of is the measure of	A. Rotational kinetic energies B. transnational kineticenergies C. Vibrationalkineticenergies D. None of the above
3	If absolute temperature of a gas is doubled and the pressure is reduced to one half, the volume of gas will :	A. remain unchanged B. increase four times C. reduce to 1/4 D. be doubled
4	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
5	The movement of gas molecules from a region of high pressure to vacuum is called	A. Evaportation B. Effusion C. Conduction D. Diffusion
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	Cooling happens under the Joule Thomson Effect due to sudden	A. Contraction B. Absorption C. Expansion D. All of above
9	If absolute temperature of a gas is doubled and the pressure is reduced to one half, the volume of gas will :	A. remain unchanged B. increase four times C. reduce to 1/4 D. be doubled
10	Which of the following is the simplest form of matter?	A. Gaseous state B. Liquid state C. Solid state D. All of above

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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

Which statement about gases is not correct ?

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

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

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

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

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

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

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

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

In solids, the temperature of is the measure of

Gases exert pressure on walls of container because the gas molecules

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

Boyle's law does not fall even

Which of the following is the simplest form of matter?

All gases can be compressed by

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

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

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

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

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

All gases can be compressed by :

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

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

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

Liquids are less common than :

Boyle's law doesn't fail even :

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

The rate of diffusion of a gas in

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

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