ECAT Pre Engineering Chemistry Chapter 3 MCQ Test With Answer

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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
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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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kayani 17 - Jul - 2024 07 Min 39 Sec 95/120
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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
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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	A graph between P and 1/V at constant temperature and number moles of a gas meets the	A. y-axis B. x-axis C. origin D. none of above
2	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
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	A graph b/w P and 1/V at constant temperature and number of moles is parallel to :	A. Y-axis B. Z-axis C. X-axis D. None of above
5	Gases of air always remain in random motion and do not settle due to :	A. Difference in molecular masses of air gases. B. Difference in partial pressure of gas molecules. C. Unequal number of different gas molecules. D. Elastic collision of gas molecules.
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	The relationships between volume of a given amount of gas and the prevailing conditions of temperature and pressure are	A. Charle's Law B. Graham's Law C. Boyle's Law D. Gas Laws
8	The intramolecular forces in gases are	A. Weak B. Normal C. Very weak D. Strong
9	Gases of air, always remain in random motion and do not settle due to	A. Difference in molecular masses of air gases B. Difference in partial pressure of gas molecules C. Unequal number of different gas molecules D. Elastic collision of gas molecules
10	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

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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

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

All gases can be compressed by

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

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

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

Boyle's law is represented as :

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

In gases and liquids, temperature is the measure of

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

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

Which of the following is the simplest form of matter?

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

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

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

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

According to Boyle's law. which parameters give a straight line parallel to x-axis, when we plot a graph between

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

All gases can be compressed by :

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

Absolute temperature of a gas is proportional to

The molar value of CO2 is maximum at :

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

Which statement about gases is not correct ?

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

Gases exert pressure on walls of container because the gas molecules

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

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

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

Which of the following is the simplest form of matter?

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

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ECAT Chemistry Chapter 3 Important MCQ's

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The molar value of CO₂is maximum at :