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 highest temperature at which a substance can exist as a liquid is called its	A. Critical temperature B. Zero temperature C. Absolute temperature D. None of above
2	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
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	The order of the rate of diffusion of gases NH₃,SO₂, CL₂, and CO₂ IS :	A. NH_{3 >}SO_{2 >}CL_{2 >}CO₂ B. NH_{3 >}CO_{2 >}SO_{2 >}CL₂ C. CL_{2 >}SO_{2 >}CO_{2 >}NH₃ D. NH_{3 >}CO₂_>CL_{2 >}SO₂
6	Gases shows uniform behavior toward their :	A. Internal conditions B. External conditions C. Internal and external conditions D. None of above
7	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
8	Keeping the temperature constant, if the gas is expanded	A. kinetic energy of molecules will increase B. Number of gas molecules increases C. Temperature will increases D. Pressure will decrease
9	All gases can be compressed by	A. Keeping constant pressure B. Decreasing pressure C. Increasing pressure D. None 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

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

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

Which Statement about gases is not correct?

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

Gases exert pressure on walls of container because the gas molecules

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

Boyle's law does not fall even

Which statement about gases is not correct ?

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

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 :

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

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

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

All gases can be compressed by :

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

The intramolecular forces in gases are

The rate of diffusion of a gas in

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

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

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

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

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

Number of molecules in one dm3 of water is close to :

Which of the following is the simplest form of matter?

The molar value of CO2 is maximum at :

Boyle's law doesn't fail even :

Keeping the temperature constant, if the gas is expanded

Which of the following is the simplest form of matter?

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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 :

Number of molecules in one dm³of water is close to :

The molar value of CO₂is maximum at :