-
question_answer1)
Which set of conditions represents easiest way to liquefy a gas [NCERT 1983]
A)
Low temperature and high pressure done
clear
B)
High temperature and low pressure done
clear
C)
Low temperature and low pressure done
clear
D)
High temperature and high pressure done
clear
View Solution play_arrow
-
question_answer2)
Adiabatic demagnetisation is a technique used for [BHU 1984]
A)
Adiabatic expansion of a gas done
clear
B)
Production of low temperature done
clear
C)
Production of high temperature done
clear
D)
None done
clear
View Solution play_arrow
-
question_answer3)
An ideal gas can't be liquefied because [CBSE PMT 1992]
A)
Its critical temperature is always above \[{{0}^{o}}C\] done
clear
B)
Its molecules are relatively smaller in size done
clear
C)
It solidifies before becoming a liquid done
clear
D)
Forces operative between its molecules are negligible done
clear
View Solution play_arrow
-
question_answer4)
However great the pressure, a gas cannot be liquefied above its
A)
Boyle temperature done
clear
B)
Inversion temperature done
clear
C)
Critical temperature done
clear
D)
Room temperature done
clear
View Solution play_arrow
-
question_answer5)
An ideal gas obeying kinetic theory of gases can be liquefied if [CBSE PMT 1995]
A)
Its temperature is more than critical temperature \[{{T}_{c}}\] done
clear
B)
Its pressure is more than critical pressure \[{{P}_{c}}\] done
clear
C)
Its pressure is more than \[{{P}_{c}}\] at a temperature less than \[{{T}_{c}}\] done
clear
D)
It cannot be liquefied at any value of P and T done
clear
View Solution play_arrow
-
question_answer6)
The Vander Waal's parameters for gases W, X, Y and Z are
Gas | a (atm L2 mol?2) | b (L mol?1?11?1?14545454) |
W | 4.0 | 0.027 |
X | 8.0 | 0.030 |
Y | 6.0 | 0.032 |
Z | 12.0 | 0.027 |
Which one of these gases has the highest critical temperature
A)
W done
clear
B)
X done
clear
C)
Y done
clear
D)
Z done
clear
View Solution play_arrow
-
question_answer7)
The Vander Waal's constant 'a' for the gases \[{{O}_{2}},\,{{N}_{2}},\,N{{H}_{3}}\] and \[C{{H}_{4}}\]are 1.3, 1.390, 4.170 and 2.253 \[{{L}^{2}}\,atm\,mo{{l}^{-2}}\] respectively. The gas which can be most easily liquefied is [IIT 1989]
A)
\[{{O}_{2}}\] done
clear
B)
\[{{N}_{2}}\] done
clear
C)
\[N{{H}_{3}}\] done
clear
D)
\[C{{H}_{4}}\] done
clear
View Solution play_arrow
-
question_answer8)
A gas can be liquefied [AFMC 2005]
A)
Above its critical temperature done
clear
B)
At its critical temperature done
clear
C)
Below its critical temperature done
clear
D)
At any temperature done
clear
View Solution play_arrow
-
question_answer9)
Which of the following is correct for critical temperature
A)
It is the highest temperature at which liquid and vapour can coexist done
clear
B)
Beyond the critical temperature, there is no distinction between the two phases and a gas cannot be liquefied by compression done
clear
C)
At critical temperature \[({{T}_{c}})\] the surface tension of the system is zero done
clear
D)
At critical temperature the gas and the liquid phases have different critical densities done
clear
View Solution play_arrow
-
question_answer10)
A gas has a density of 2.68 \[g/L\] at stp. Identify the gas
A)
\[N{{O}_{2}}\] done
clear
B)
Kr done
clear
C)
COS done
clear
D)
\[S{{O}_{2}}\] done
clear
View Solution play_arrow
-
question_answer11)
Weight of 112 ml of oxygen at NTP on liquefaction would be [DPMT 1984]
A)
0.32 g done
clear
B)
0.64 g done
clear
C)
0.16 g done
clear
D)
0.96 g done
clear
View Solution play_arrow