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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ECAT Chemistry Chapter 3 Important MCQ's

Sr.#	Question	Answer
1	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
2	Cooling happens under the Joule Thomson Effect due to sudden :	A. Contraction B. Absortption C. Expansion D. All of above
3	All gases can be compressed by :	A. Keeping constant pressure B. Decreasing pressure C. Increasing pressure D. None of the above
4	Which of the following is the simplest form of matter?	A. Gaseous state B. Liquid State C. Solid State D. All of above
5	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
6	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
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	In gases and liquids, temperature is the measure of	A. Average translational kinetic energies of molecules B. Average vibrational kinetic energies of molecules C. Average rotational kinetic energies of molecules D. None of above
9	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
10	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

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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

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

Cooling happens under the Joule Thomson Effect due to sudden :

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

The rate of diffusion of a gas is :

Cooling happens under the Joule Thomson Effect due to sudden

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

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

Boyle's law is represented as :

The molar value of CO2 is maximum at :

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

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

The relationships between volume of a given amount of gas and the prevailing conditions of temperature and pressure are

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

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

Liquids are less common than :

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

The intramolecular forces in gases are

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

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

Boyle's law doesn't fail even :

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

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

In Solids, the temperature is the measure of

Which statement about gases is not correct ?

All gases can be compressed by

In gases and liquids, temperature is the measure of :

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

Absolute temperature of a gas is proportional to

Boyle's law does not fall even

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

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ECAT Chemistry Chapter 3 Important MCQ's

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The molar value of CO₂is maximum at :