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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Khalida Amjad 23 - Oct - 2024 01 Min 52 Sec 115/120
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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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Muhammad Abubakar 25 - Oct - 2024 14 Min 32 Sec 105/120
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AS creations 16 - Jun - 2026 07 Min 11 Sec 96/120
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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
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Eraj Abeer 18 - Dec - 2024 04 Min 19 Sec 75/120

ECAT Chemistry Chapter 3 Important MCQ's

Sr.#	Question	Answer
1	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.
2	The movement of gas molecules from a region of high pressure to vacuum is called	A. Evaportation B. Effusion C. Conduction D. Diffusion
3	In Solids, the temperature is the measure of	A. Rotational kinetic energies B. Translational kinetic energies C. Vibrational kinetic energies D. None of above
4	Cooling happens under the Joule Thomson Effect due to sudden	A. Contraction B. Absorption C. Expansion D. All of above
5	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
6	Which of the following will have the same number of molecules at STP ?	A. 280 CM³ of CO² and 280 CM³ of N₂O B. 11.2 dm3 of O₂ and 32 g of O₂ C. 44 g of CO₂ and 11.2 dm³ of CO D. 28 g of N2 and 5.6 dm³ of oxygen
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 doesn't fail even :	A. Temperature is extremely high B. Pressure is extremely high C. Mixture of gas is taken D. All of above
9	Boyle's law is represented as :	A. P∞ 1/T B. V and 1/P C. P∞P D. P∞1/P
10	In solids, the temperature of is the measure of	A. Rotational kinetic energies B. transnational kineticenergies C. Vibrationalkineticenergies D. None of the 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

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

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

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

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

Which statement about gases is not correct ?

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

The ratio of volume to temperature on Kelvin scale is constant according to

Liquids are less common than :

The relation ships b/w volume of given amount of gas and prevailing conditions of temperature and pressure are :

Boyle's law does not fall even

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

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

In gases and liquids, temperature is the measure of

All gases can be compressed by

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

Gases show uniform behaviour towards their

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

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

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

Gases shows uniform behavior toward their :

Absolute temperature of a gas is proportional to

Keeping the temperature constant, if the gas is expanded

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

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

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

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

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

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 ?

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

Number of molecules in one dm³of water is close to :