ECAT Pre Engineering Chemistry Chapter 3 MCQ Test With Answer

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Fatima Tabassum 11 - Jan - 2025 02 Min 30 Sec 115/120
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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	Boyle's law is represented as :	A. P∞ 1/T B. V and 1/P C. P∞P D. P∞1/P
2	Gases show uniform behaviour towards their	A. Internal conditions B. External conditions C. Internal and external conditions D. None of above
3	The movement of gas molecules from a region of high pressure to vacuum is called	A. Evaportation B. Effusion C. Conduction D. Diffusion
4	The rate of diffusion of a gas is :	A. Inversely proportional to its density B. Inversely proportional to square root of its molecular mass C. Directly proportional to molecular mass D. Directly proportional to its density
5	At constant temperature when pressure of a gas is plotted against volume, the curve is	A. Slanting straight line B. Parabolic C. Staight line, parallel to pressure axis D. OF neither type
6	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
7	The relation ships b/w volume of given amount of gas and prevailing conditions of temperature and pressure are :	A. Charles's law B. Graham's law C. Boyle's law D. Gas law
8	Cooling happens under the Joule Thomson Effect due to sudden :	A. Contraction B. Absortption C. Expansion D. All of above
9	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
10	Which statement about gases is not correct ?	A. The spread throughout the vessel. B. Pressure is due to collision C. There are large spaces between the molecules. D. molecules are arranged regularly.

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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

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

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

Which Statement about gases is not correct?

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 gas will :

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

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

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

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

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

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

Gases exert pressure on walls of container because the gas molecules

Cooling happens under the Joule Thomson Effect due to sudden

Absolute temperature of a gas is proportional to

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

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

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

Which of the following is the simplest form of matter?

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

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

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

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

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

Boyle's law doesn't fail even :

Liquids are less common than

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

All gases can be compressed by

Which statement about gases is not correct ?

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

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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 :