More Classes
5th Class
6th Class
7th Class
8th Class
9th Class
10th Class
11th Class
12th Class
NAT I
NAT II
CSS
IQ
General Knowledge
MDCAT
ECAT
GAT General
GAT Subject
Other Links
Go to Home
Online Tests
MDCAT Chemistry Chapter 3 Gases Online Test MCQs With Answers
Question # 1
Under which condition CO has the maximum molar volume.
Choose an answer
high T and P
Low T and High p
high T and low pressure
Low T and low P
Previous
Skip
Next
Question # 2
The pressure exerted by gas molecules is due to their
Choose an answer
collisions
densities
masses
kinetic energy
Previous
Skip
Next
Question # 3
The root mean square velocity of a gas is doubled when the temperature is
Choose an answer
reduced to half.
reduced to one-fourth
increased four times
inereased two times
Previous
Skip
Next
Question # 4
If volume of an ideal gas at 0C° 536cm3, what is volume at 1°C
Choose an answer
373 cm3
646 cm3
Becomes 0cm3
746 cm3
Previous
Skip
Next
Question # 5
The volume of given mass of gas is directly proportional to absolute temperature when pressure is kept constant this is called
Choose an answer
Boyle's law
Charles's law
Graham's law
Dalton's law
Previous
Skip
Next
Question # 6
Which of the statement is applicable for both ideal and real gases molecules?
Choose an answer
Have no forces of attraction
Collisions between the molecules is elastic
Molecules are in random movement
The actual volume of gas is negligible as compared to the volume of gas
Previous
Skip
Next
Question # 7
Acording to the kinetic theory of gases
Choose an answer
The pressure exerted by a gas is proportional to mean square velocity of the molecules
The pressure exerted by the gas is proportional to the root mean square velocity of the molecules
The root mean square velocity is inversely proportional to the temperature
The mean translational KE of the molecule is directly proportional to the absolute temperature
Previous
Skip
Next
Question # 8
The volume of a real gas
Choose an answer
is constant
increases with T decrease
becomes zero at absolute zero
never becomes zero
Previous
Skip
Next
Question # 9
At higher temperature what is true for gases
Choose an answer
pressure is decreased
volume is decreased
number of moles are decreased
KE is increased
Previous
Skip
Next
Question # 10
According to kinetic theory of gases kinetic energy depends on
Choose an answer
Temperature
Collision
Pressure
Atomic number
Previous
Skip
Next
Question # 11
The motion imparted to the gas molecules by gravity is
Choose an answer
very small
very large
negligible
appreciable
Previous
Skip
Next
Question # 12
The molecular speed Crms of gas is
Choose an answer
Independent of temperature
Proportional to the absolute temperature
Proportional to the square root of absolute temperature
Proportional to the square of absolute temperature
Previous
Skip
Next
Question # 13
The volume of gas depends upon the------- moleules
Choose an answer
Size of
Space between
Molecular weight
both a and b
Previous
Skip
Next
Question # 14
If volume of an ideal gas at 0°C 536cm3, what is volume at 1°C
Choose an answer
373 cm3
646 cm3
Becomes 0cm3
746 cm3
Previous
Skip
Next
Question # 15
The density of neon will be highest at
Choose an answer
STP
0°C, 2 atm
273°C, 1 atm
273°C, 2 atm
Previous
Skip
Next
Question # 16
Which of the following is the correct equation to calculate relative molecular mass of a gas
Choose an answer
M=mPRTV
M=mPR/VT
M=PV/mRT
M=mRT/PV
Previous
Skip
Next
Question # 17
What are the conditions under which the relation between volume (V) and number of moles (n) of gas is plotted? (Pressure; T-temperature)
Choose an answer
constant P and T
constant P and V
constant T and V
constant n and v
Previous
Skip
Next
Question # 18
Helium atom is two times heavier than a hydrogen molecule. At 298 K, the average kinetic energy of a helium atom is
Choose an answer
same as that of a hydrogen molecule
half that of a hydrogen molecule
two times that of a hydrogen molecule
four times that of hydrogen molecule
Previous
Skip
Next
Question # 19
The relationship between density and molar mass of a gas is
Choose an answer
Directly proportional
Inversly proportional
Straight line
Stoichiometric
Previous
Skip
Next
Question # 20
According to the general gas equation, density of an ideal gas depends upon
Choose an answer
Pressure
Temperature
Molar mass of the gas
All of the above
Previous
Skip
Next
Question # 21
The pressure of gas at constant temperature in a container of 2dm3 is 10 atm what will be its final pressure if it is connected with 10 dm3 container
Choose an answer
2 atm
1.6 atm
5 atm
I atm
Previous
Skip
Next
Back