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

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

Question # 2

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

Question # 3

Liquids are less common than

Question # 4

Boyle's law is represented as :

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

Boyle's law does not fall even

Question # 13

All gases can be compressed by :

Question # 14

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

Question # 15

Cooling happens under the Joule Thomson Effect due to sudden

Question # 16

Which of the following is the simplest form of matter?

Question # 17

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

Question # 18

In Solids, the temperature is the measure of

Question # 19

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

Question # 20

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

Question # 21

Absolute temperature of a gas is proportional to

Question # 22

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

Question # 23

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

Question # 24

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

Question # 25

Gases exert pressure on walls of container because the gas molecules

Question # 26

The rate of diffusion of a gas in

Question # 27

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

Question # 28

Boyle's law doesn't fail even :

Question # 29

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

Question # 30

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

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 The density of a gas is directly proportional to pressure, inversely proportional to temperature and directly proportional to
A. Viscosity
B. Molar mass
C. Momentum
D. All of above
2 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
3

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
4

Pressure remaining constant, at which temperature volume of gas will become twice of what it is at 0°C ?
A.

546

B. 200
C. 546K
D. 273K
5 Cooling happens under the Joule Thomson Effect due to sudden
A. Contraction
B. Absorption
C. Expansion
D. All of above
6 Cooling happens under the Joule Thomson Effect due to sudden :
A. Contraction
B. Absortption
C. Expansion
D. All of above
7 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.
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 intramolecular force in gases are :
A. Weak
B. Normal
C. Very weak
D. Strong
10 Gases shows uniform behavior toward their :
A. Internal conditions
B. External conditions
C. Internal and external conditions
D. None of above

Test Questions

Is this page helpful?