ECAT Pre Engineering Chemistry Chapter 3 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 3 Gases

Try The MCQ's Test For ECAT Chemistry Chapter 3 Gases

  • Total Questions30

  • Time Allowed30

Start Test Download PDF

ECAT Chemistry Chapter 3 Gases

00:00
Question # 1

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

Question # 2

Gases shows uniform behavior toward their :

Question # 3

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

Question # 4

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

Question # 5

The rate of diffusion of a gas is :

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

The molar value of CO2 is maximum at :

Question # 12

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

Question # 13

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

Question # 14

The intramolecular forces in gases are

Question # 15

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

Question # 16

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

Question # 17

The rate of diffusion of a gas in

Question # 18

Which Statement about gases is not correct?

Question # 19

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

Question # 20

All gases can be compressed by

Question # 21

In gases and liquids, temperature is the measure of :

Question # 22

How should condition be changed to prevent the volume of a given gas from expanding whine its mass is increased ?

Question # 23

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

Question # 24

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

Question # 25

Liquids are less common than

Question # 26

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

Question # 27

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

Question # 28

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

Question # 29

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

Question # 30

Liquids are less common than :

Submit

Prepare Complete Set Wise ECAT Chemistry Chapter 3 Gases MCQs Online With Answers


Topic Test

00:00
Submit

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
  • 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
  • L
    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
  • Y
    Yasmeen Ashraf 04 - Jun - 2024 06 Min 46 Sec 75/120

ECAT Chemistry Chapter 3 Important MCQ's

Sr.# Question Answer
1 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
2 Absolute temperature of a gas is proportional to
A. Rotational kinetic energy
B. Translational kinetic energy
C. Vibrational kinetic energy
D. Potential energy
3 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
4 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
5 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
6 All gases can be compressed by :
A. Keeping constant pressure
B. Decreasing pressure
C. Increasing pressure
D. None of the above
7 The molar value of CO2 is maximum at :
A. STP
B. 127°C and 1 atm
C. 0°C and 2 atm
D. 273°C and 2 atm
8 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.
9 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
10 In solids, the temperature of is the measure of
A. Rotational kinetic energies
B. transnational kineticenergies
C. Vibrationalkineticenergies
D. None of the above

Test Questions

Is this page helpful?