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	A graph b/w P and 1/V at constant temperature and number of moles is parallel to :	A. None of above B. X-axis C. Z-axis D. Y-axis
2	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
3	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.
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	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
6	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
7	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
8	In Boyle's law which of the following pair remains constant :	A. Temperature and quality of a gas. B. Pressure and quality of a gas. C. Temperature and pressure D. Temperature and quantity of a gas.
9	In solids, the temperature of is the measure of	A. Rotational kinetic energies B. transnational kineticenergies C. Vibrationalkineticenergies D. None of the above
10	The movement of molecules from a region of high pressure to vacuum is called :	A. Evaporation B. Effusion C. Conduction D. Difusion

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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

In Solids, the temperature is the measure of

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

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

In solids, the temperature of is the measure of

Cooling happens under the Joule Thomson Effect due to sudden :

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

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

Boyle's law does not fall even

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

The molar value of CO2 is maximum at :

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

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

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

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

The rate of diffusion of a gas is :

Gases exert pressure on walls of container because the gas molecules

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 :

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

All gases can be compressed by :

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

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

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

Gases show uniform behaviour towards their

Cooling happens under the Joule Thomson Effect due to sudden

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

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

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ECAT Chemistry Chapter 3 Important MCQ's

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Number of molecules in one dm³of water is close to :

The molar value of CO₂is maximum at :

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