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	Cooling happens under the Joule Thomson Effect due to sudden :	A. Contraction B. Absortption C. Expansion D. All of above
2	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
3	All gases can be compressed by :	A. Keeping constant pressure B. Decreasing pressure C. Increasing pressure D. None of the above
4	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
5	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
6	The molar value of CO₂is maximum at :	A. STP B. 127°C and 1 atm C. 0°C and 2 atm D. 273°C and 2 atm
7	Equal masses of methane and oxygen are mixed in an empty container at 25°CThe fraction of total pressure exerted by oxygen is :	A. 1/2 B. 8/9 C. 1/9 D. 16/17
8	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
9	Liquids are less common than :	A. Solids B. Plasmas C. Gases D. All of above
10	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

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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 :

The intramolecular forces in gases are

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

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

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 :

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

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

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

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

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 :

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

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

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

Boyle's law doesn't fail even :

In solids, the temperature of is the measure of

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

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

The molar value of CO2 is maximum at :

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

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

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

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

The rate of diffusion of a gas in

Gases shows uniform behavior toward their :

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

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

Boyle's law does not fall even

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

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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 :