ECAT Pre Engineering Chemistry Chapter 3 MCQ Test With Answer

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Abdullah Zubair 17 - Dec - 2024 04 Min 34 Sec 120/120
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Khalida Amjad 23 - Oct - 2024 01 Min 52 Sec 115/120
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Fatima Tabassum 11 - Jan - 2025 02 Min 30 Sec 115/120
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rehan sanaullah 06 - Jun - 2024 05 Min 12 Sec 105/120
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A

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kayani 17 - Jul - 2024 07 Min 39 Sec 95/120
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M Saifullah 02 - Jul - 2024 12 Min 19 Sec 80/120
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Shazi Ansari 05 - Jun - 2024 03 Min 12 Sec 75/120
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Eraj Abeer 18 - Dec - 2024 04 Min 19 Sec 75/120

ECAT Chemistry Chapter 3 Important MCQ's

Sr.#	Question	Answer
1	How should condition be changed to prevent the volume of a given gas from expanding whine its mass is increased ?	A. Temperature is lowered and pressure is increased B. Temperature is increasedand pressure is lowered C. Temperature and pressure both are lowered D. Temperature and pressure both are increased
2	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
3	Gases of air, always remain in random motion and do not settle due to	A. Difference in molecular masses of air gases B. Difference in partial pressure of gas molecules C. Unequal number of different gas molecules D. Elastic collision of gas molecules
4	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.
5	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
6	The intramolecular force in gases are :	A. Weak B. Normal C. Very weak D. Strong
7	The intramolecular forces in gases are	A. Weak B. Normal C. Very weak D. Strong
8	The graph between pressure and volume at constant temperature for a gas is	A. Isobaric B. Isothermal C. Isotherm D. None of above
9	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
10	Liquids are less common than	A. Solids B. Plasmas C. Gases D. All 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

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

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

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

The rate of diffusion of a gas in

Gases exert pressure on walls of container because the gas molecules

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 :

Which of the following is the simplest form of matter?

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

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

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

In gases and liquids, temperature is the measure of :

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

Gases show uniform behaviour towards their

Boyle's law doesn't fail even :

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

Liquids are less common than

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

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

Absolute temperature of a gas is proportional to

In Solids, the temperature is the measure of

In gases and liquids, temperature is the measure of

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

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 :

Cooling happens under the Joule Thomson Effect due to sudden

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

The rate of diffusion of a gas is :

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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 :