ECAT Pre Engineering Chemistry Chapter 3 MCQ Test With Answer

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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	If absolute temperature of a gas is doubled and the pressure is reduced to one half, the volume of the gas will be	A. Remain unchanged B. Doubled C. Reduced D. Increased four times
2	Gases deviate from ideal behavior at high pressure. Which of the following is correct for non-ideality ?	A. At high pressure, the gas molecules move in one direction only. B. At high pressure, the collisions between the gas molecules are increased manifold. C. At high pressure, the volume of gas becomes insignificant. D. At high pressure, the inter molecular attraction become significant.
3	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
4	In gases and liquids, temperature is the measure of :	A. Average transnational kinetic energies of molecules. B. Average vibrational kinetic energies of molecules. C. Average rotational kinetic energies of molecules. D. None of above
5	Boyle's law is represented as :	A. P∞ 1/T B. V and 1/P C. P∞P D. P∞1/P
6	Boyle's law does not fall even	A. Temperature is extremely high B. Pressure is extremely high C. Mixture of gases is taken D. all of above
7	All gases can be compressed by :	A. Keeping constant pressure B. Decreasing pressure C. Increasing pressure D. None of the above
8	The ratio of volume to temperature on Kelvin scale is constant according to	A. Charle's law B. Newton's law C. Coulomb's law D. Boyle's law
9	Which of the following is the simplest form of matter?	A. Gaseous state B. Liquid State C. Solid State D. All of above
10	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

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

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

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

In solids, the temperature of is the measure of

The intramolecular force in gases are :

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

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 axis-s, when we plot a graph between:

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

Gases exert pressure on walls of container because the gas molecules

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

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

In Solids, the temperature is the measure of

Keeping the temperature constant, if the gas is expanded

Which of the following is the simplest form of matter?

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

Pressure remaining constant, at which temperature volume of gas will become twice of what it is at 0°C ?

All gases can be compressed by

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

The intramolecular forces in gases are

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

Gases show uniform behaviour towards their

Gases shows uniform behavior toward their :

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

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

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

Liquids are less common than

Absolute temperature of a gas is proportional to

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

The rate of diffusion of a gas in

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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 :