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

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

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

Gases exert pressure on walls of container because the gas molecules

Question # 6

Gases shows uniform behavior toward their :

Question # 7

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

Question # 8

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

Question # 9

Boyle's law doesn't fail even :

Question # 10

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

Question # 11

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

Question # 12

Gases show uniform behaviour towards their

Question # 13

In gases and liquids, temperature is the measure of

Question # 14

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

Question # 15

Which of the following is the simplest form of matter?

Question # 16

Liquids are less common than :

Question # 17

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

Question # 18

The molar value of CO2 is maximum at :

Question # 19

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

Question # 20

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

Question # 21

The rate of diffusion of a gas in

Question # 22

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

Question # 23

Which of the following is the simplest form of matter?

Question # 24

All gases can be compressed by :

Question # 25

Absolute temperature of a gas is proportional to

Question # 26

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

Question # 27

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

Question # 28

Cooling happens under the Joule Thomson Effect due to sudden

Question # 29

The intramolecular forces in gases are

Question # 30

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

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 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
2 Liquids are less common than :
A. Solids
B. Plasmas
C. Gases
D. All of above
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 If absolute temperature of a gas is doubled and the pressure is reduced to one half, the volume of gas will :
A. remain unchanged
B. increase four times
C. reduce to 1/4
D. be doubled
5 In Boyle's law which of the following pair is variable :
A. Temperature and quantity of a gas.
B. Pressure and volume
C. Volume and quantity of a gas.
D. Pressure and quantity of a gas.
6

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
7 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
8 Keeping the temperature constant, if the gas is expanded
A. kinetic energy of molecules will increase
B. Number of gas molecules increases
C. Temperature will increases
D. Pressure will decrease
9 The movement of molecules from a region of high pressure to vacuum is called :
A. Evaporation
B. Effusion
C. Conduction
D. Difusion
10 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

Test Questions

Is this page helpful?

Share your comments & questions here

Guest
  • ahsan

    ahsan

    20 Jul 2019

    hello

    Like
    Reply