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

Cooling happens under the Joule Thomson Effect due to sudden :

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

In Solids, the temperature is the measure of

Question # 7

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

Question # 8

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

Question # 9

Boyle's law doesn't fail even :

Question # 10

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

Question # 11

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

Question # 12

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

Question # 13

In gases and liquids, temperature is the measure of

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

The rate of diffusion of a gas is :

Question # 17

Liquids are less common than :

Question # 18

Which of the following is the simplest form of matter?

Question # 19

Which statement about gases is not correct ?

Question # 20

The molar value of CO2 is maximum at :

Question # 21

Absolute temperature of a gas is proportional to

Question # 22

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

Question # 23

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

Question # 24

In gases and liquids, temperature is the measure of :

Question # 25

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

Question # 26

Gases show uniform behaviour towards their

Question # 27

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

Question # 28

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

Question # 29

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

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 Gases deviate from ideal behavior at high pressure. Which of the following is correct for non-ideality ?
A. At high pressure, the gas molecules move in one direction only.
B. At high pressure, the collisions between the gas molecules are increased manifold.
C. At high pressure, the volume of gas becomes insignificant.
D. At high pressure, the inter molecular attraction become significant.
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

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

6.02/22.4


B.

12.04/22.4 *1023


C.

18/22.4*1023

D.

55.6*6.02*1023 * 1023
4

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

280 CM3 of CO2 and 280 CM3 of N2O

B.

11.2 dm3 of O2 and 32 g of O2

C.

44 g of CO2 and 11.2 dm3 of CO

D.

28 g of N2 and 5.6 dm3 of oxygen
5 Gases shows uniform behavior toward their :
A. Internal conditions
B. External conditions
C. Internal and external conditions
D. None of above
6 Cooling happens under the Joule Thomson Effect due to sudden
A. Contraction
B. Absorption
C. Expansion
D. All of above
7 The intramolecular force in gases are :
A. Weak
B. Normal
C. Very weak
D. Strong
8 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
9 Cooling happens under the Joule Thomson Effect due to sudden :
A. Contraction
B. Absortption
C. Expansion
D. All of above
10 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

Test Questions

Is this page helpful?