ECAT Pre Engineering Chemistry Chapter 3 MCQ Test With Answer

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ECAT Chemistry Chapter 3 Important MCQ's

Sr.#	Question	Answer
1	The product of pressure and volume remains constant when temperature and quantity of gas is	A. zero B. variable C. kept constant D. None of these
2	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
3	A graph between P and PV at constant temperature and number of mole is parallel to	A. y axis B. z axis C. x axis D. pressure axis
4	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
5	Gases show uniform behaviour towards their	A. Internal conditions B. External conditions C. Internal and external conditions D. None of above
6	Gases shows uniform behavior toward their :	A. Internal conditions B. External conditions C. Internal and external conditions D. None of above
7	Cooling happens under the Joule Thomson Effect due to sudden :	A. Contraction B. Absortption C. Expansion D. All of above
8	For a gas obeying Boyle's law if pressure is doubled, the volume becomes	A. Remains constant B. Double C. One half D. None of above
9	Cooling happens under the Joule Thomson Effect due to sudden	A. Contraction B. Absorption C. Expansion D. All of above
10	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

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

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

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

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

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 axis-s, when we plot a graph between:

Boyle's law is represented as :

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

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

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

The rate of diffusion of a gas is :

In Solids, the temperature is the measure of

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

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

Which statement about gases is not correct ?

Keeping the temperature constant, if the gas is expanded

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

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

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

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

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

Liquids are less common than :

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

Cooling happens under the Joule Thomson Effect due to sudden

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

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

The intramolecular force in gases are :

How should condition be changed to prevent the volume of a given gas from expanding whine its mass is increased ?

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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 :