ECAT Pre Engineering Chemistry Chapter 3 MCQ Test With Answer

Top Scorers Of ECAT Chemistry Chapter 3 Gases MCQ`s Test

A

Abdullah Zubair 17 - Dec - 2024 04 Min 34 Sec 120/120
K

Khalida Amjad 23 - Oct - 2024 01 Min 52 Sec 115/120
F

Fatima Tabassum 11 - Jan - 2025 02 Min 30 Sec 115/120
R

rehan sanaullah 06 - Jun - 2024 05 Min 12 Sec 105/120
M

Muhammad Abubakar 25 - Oct - 2024 14 Min 32 Sec 105/120
A

AS creations 16 - Jun - 2026 07 Min 11 Sec 96/120
U

Umar Saeed 21 - Jul - 2024 02 Min 11 Sec 95/120
K

kayani 17 - Jul - 2024 07 Min 39 Sec 95/120
N

notghouri playz 16 - Dec - 2024 16 Min 23 Sec 95/120
M

Mirza Abdullah 11 - Jun - 2024 04 Min 21 Sec 90/120
A

Aman Fatima 03 - Jan - 2026 17 Min 21 Sec 88/120
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Laiba Jawad 21 - Sep - 2024 07 Min 29 Sec 80/120
M

M Saifullah 02 - Jul - 2024 12 Min 19 Sec 80/120
S

Shazi Ansari 05 - Jun - 2024 03 Min 12 Sec 75/120
E

Eraj Abeer 18 - Dec - 2024 04 Min 19 Sec 75/120

ECAT Chemistry Chapter 3 Important MCQ's

Sr.#	Question	Answer
1	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
2	Boyle's law does not fall even	A. Temperature is extremely high B. Pressure is extremely high C. Mixture of gases is taken D. all of above
3	Gases exert pressure on walls of container because the gas molecules :	A. Obey gas laws. B. Have definite volume. C. Collide with the walls of container. D. Collide with each other.
4	Boyle's law is represented as :	A. P∞ 1/T B. V and 1/P C. P∞P D. P∞1/P
5	Cooling happens under the Joule Thomson Effect due to sudden :	A. Contraction B. Absortption C. Expansion D. All of above
6	Boyle's law doesn't fail even :	A. Temperature is extremely high B. Pressure is extremely high C. Mixture of gas is taken D. All of above
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	The rate of diffusion of a gas in	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
9	Gases show uniform behaviour towards their	A. Internal conditions B. External conditions C. Internal and external conditions D. None of above
10	At constant temperature when pressure of a gas is plotted against volume, the curve is	A. Slanting straight line B. Parabolic C. Staight line, parallel to pressure axis D. OF neither type

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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

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

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

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

Which of the following is the simplest form of matter?

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

In gases and liquids, temperature is the measure of

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

The rate of diffusion of a gas is :

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

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

In gases and liquids, temperature is the measure of :

In Solids, the temperature is the measure of

Gases show uniform behaviour towards their

In solids, the temperature of is the measure of

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

Liquids are less common than

Which statement about gases is not correct ?

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

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

Gases exert pressure on walls of container because the gas molecules

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

The intramolecular force in gases are :

Keeping the temperature constant, if the gas is expanded

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

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

Boyle's law doesn't fail even :

The product of pressure and volume remains constant when temperature and quantity of gas is

All gases can be compressed by :

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

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

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