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

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ECAT Chemistry Chapter 3 Gases

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Question # 1

In Solids, the temperature is the measure of

Question # 2

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

Question # 3

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

Question # 4

All gases can be compressed by :

Question # 5

Liquids are less common than

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

Boyle's law is represented as :

Question # 10

Liquids are less common than :

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

Absolute temperature of a gas is proportional to

Question # 15

Cooling happens under the Joule Thomson Effect due to sudden

Question # 16

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

Question # 17

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

Question # 18

All gases can be compressed by

Question # 19

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

Question # 20

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

Question # 21

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

Question # 22

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

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 intramolecular force in gases are :

Question # 25

Keeping the temperature constant, if the gas is expanded

Question # 26

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

Question # 27

The intramolecular forces in gases are

Question # 28

The rate of diffusion of a gas is :

Question # 29

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

Question # 30

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

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ECAT Chemistry Chapter 3 Important MCQ's

Sr.# Question Answer
1 The intramolecular forces in gases are
A. Weak
B. Normal
C. Very weak
D. Strong
2 Boyle's law is represented as :
A.

P∞ 1/T

B. V and 1/P
C. P∞P
D. P∞1/P
3 A graph b/w P and 1/V at constant temperature and number of moles is parallel to :
A. None of above
B. X-axis
C. Z-axis
D. Y-axis
4 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
5 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
6 The order of the rate of diffusion of gases NH3,SO2, CL2, and CO2 IS :
A. NH3 >SO2 >CL2 >CO2
B. NH3 >CO2 >SO2 >CL2
C. CL2 >SO2 >CO2 >NH3
D. NH3 >CO2>CL2 >SO2
7 The density of a gas is directly and volume at constant temperature for a gas is
A. Isobaric
B. Isothermal
C. Isotherm
D. None of above
8 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
9 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
10 The product of pressure and volume remains constant when temperature and quantity of gas is
A. zero
B. variable
C. kept constant
D. None of these

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