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
If temperature is 73K and volume is 146 cm3 then calculate the value of K=V/T
Choose an answer
5
4
3
2
Previous
Skip
Next
Question # 2
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
Question # 3
The pressure exerted by gas molecules is due to their
Choose an answer
collisions
densities
masses
kinetic energy
Previous
Skip
Next
Question # 4
According to kinetic theory of gases kinetic energy depends on
Choose an answer
Temperature
Collision
Pressure
Atomic number
Previous
Skip
Next
Question # 5
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 # 6
Which one of the following statements is wrong for gases?
Choose an answer
gases do not have a definite shape and volume
volume of the gas is equal to volume of container confining the gas
confirmed gas exerts uniform pressure on the walls of its container in which it is enclosed
mass of gas cannot be determined by weighing a container in which it is enclosed
Previous
Skip
Next
Question # 7
One dm3 of H2 and O2: has different masses but no. of particles are
Choose an answer
same
H2 has greater
different
O2 has greater
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 isotherm of Boyle's law moves away from both axis, is due to increase in
Choose an answer
pressure
No. of moles
Volume
all of these
Previous
Skip
Next
Question # 10
If increase in temperature and volume of an ideal gas is two times, then the initial pressure P changes to
Choose an answer
4P
P
2P
3P
Previous
Skip
Next
Question # 11
If a gas expands at constant temperature
Choose an answer
The pressure decreases
The Kinetic energy of the molecules remains the same
The kinetic energy of the molecules decreases
The number of molecules of the gas increase
Previous
Skip
Next
Question # 12
An ideal gas, obeying Kinetic theory of gases cannot be liquified, because
Choose an answer
its critical temperature is above 0°C
its molecules are relatively small in size
It solidifies before becoming a liquid
Forces acting between its molecules are negligible
Previous
Skip
Next
Question # 13
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 P
Low T and low P
Previous
Skip
Next
Question # 14
The motion imparted to the gas molecules by gravity is
Choose an answer
very small
very large
negligible
appreciable
Previous
Skip
Next
Question # 15
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 # 16
The mono atomic gases are
Choose an answer
Halogens
Noble gases
6h group elements
Nitrogen and oxygen
Previous
Skip
Next
Question # 17
For an ideal gas, number of mole in terms of its pressure P, temperature T and gas constant is
Choose an answer
PT/R
PRT
PV/RT
RT/P
Previous
Skip
Next
Question # 18
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 # 19
The number of molecules in 22.4 dm3 of gas at 0°C and 1 atm are
Choose an answer
6.02×10(23)
6.02× 10(25)
6.02×10(22)
6.02×10(21)
Previous
Skip
Next
Question # 20
Gas is enclosed in a container of 20cm3 with the moving piston. According to kinetic theory of gases, what is the effect on freely moving molecules of the gas if temperature is increased from 20°C to 100C.
Choose an answer
Colliding capability of molecule will become lower
Pressure will become one half
Temperature has no effect on freely moving molecules
Volume will be increased
Previous
Skip
Next
Back