ECAT Pre Engineering Chemistry Chapter 3 MCQ Test With Answer

Top Scorers Of ECAT Chemistry Chapter 3 Gases MCQ`s Test

A

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
F

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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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
E

Eraj Abeer 18 - Dec - 2024 04 Min 19 Sec 75/120
Y

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 gas will :	A. remain unchanged B. increase four times C. reduce to 1/4 D. be doubled
2	The ratio of volume to temperature on Kelvin scale is constant according to	A. Charle's law B. Newton's law C. Coulomb's law D. Boyle's law
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	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.
5	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
6	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
7	Which of the following is the simplest form of matter?	A. Gaseous state B. Liquid state C. Solid state D. All of above
8	The intramolecular forces in gases are	A. Weak B. Normal C. Very weak D. Strong
9	According to Boyle's law. which parameters give a straight line parallel to x-axis, when we plot a graph between	A. V and T B. P and V C. P and 1/V D. P and PV
10	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

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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 of the following is the simplest form of matter?

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

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

Boyle's law is represented as :

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

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

Keeping the temperature constant, if the gas is expanded

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

Gases exert pressure on walls of container because the gas molecules :

Gases show uniform behaviour towards their

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

Cooling happens under the Joule Thomson Effect due to sudden

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

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

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

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

Absolute temperature of a gas is proportional to

The molar value of CO2 is maximum at :

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

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

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 ?

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

Boyle's law doesn't fail even :

The intramolecular force in gases are :

The movement of 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

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

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

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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 :

Number of molecules in one dm³of water is close to :