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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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	Which Statement about gases is not correct?	A. They spread throughout the vessel B. Pressure is due to collision C. There are larger spaces between the molecules D. Molecules are arranged regularly
2	Number of molecules in one dm³of water is close to :	A. 6.02/22.4 B. 12.04/22.4 10²³ C. 18/22.410²³ D. 55.66.0210²³* 10²³
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	The density of a gas is directly proportional to pressure, inversely proportional to temperature and directly proportional to	A. Viscosity B. Molar mass C. Momentum D. All of above
5	The order of the rate of diffusion of gases NH₃,SO₂, CL₂, and CO₂ IS :	A. NH_{3 >}SO_{2 >}CL_{2 >}CO₂ B. NH_{3 >}CO_{2 >}SO_{2 >}CL₂ C. CL_{2 >}SO_{2 >}CO_{2 >}NH₃ D. NH_{3 >}CO₂_>CL_{2 >}SO₂
6	In solids, the temperature of is the measure of	A. Rotational kinetic energies B. transnational kineticenergies C. Vibrationalkineticenergies D. None of the above
7	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
8	Keeping the temperature constant, if the gas is expanded	A. kinetic energy of molecules will increase B. Number of gas molecules increases C. Temperature will increases D. Pressure will decrease
9	The density of a gas is directly and volume at constant temperature for a gas is	A. Isobaric B. Isothermal C. Isotherm D. None of above
10	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.

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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

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

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

Number of molecules in one dm3 of water is close 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 molecules from a region of high pressure to vacuum is called :

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

Gases exert pressure on walls of container because the gas molecules

The rate of diffusion of a gas is :

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

In gases and liquids, temperature is the measure of

Keeping the temperature constant, if the gas is expanded

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

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

Boyle's law doesn't fail even :

Boyle's law does not fall even

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

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

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

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

The rate of diffusion of a gas in

All gases can be compressed by :

Gases show uniform behaviour towards their

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

Cooling happens under the Joule Thomson Effect due to sudden :

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

The molar value of CO2 is maximum at :

In gases and liquids, temperature is the measure of :

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

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

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

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ECAT Chemistry Chapter 3 Important MCQ's

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Number of molecules in one dm³of water is close to :

The molar value of CO₂is maximum at :