Related Questions

People______________ aeroplanes nowadays.
A used to see
B were used to seeing
C used to seeing
D seeing
People ______________ aeroplanes nowadays.
A are used to seeing
B were used to seeing
C have been used to seeing
D used to see
The type of rotary compressor used in aeroplanes, is of
A Centrifugal type
B Axial flow type
C Radial flow type
D None of these
Refrigeration in aeroplanes usually employs the following refrigerant
A CO2
B Freon-11
C Freon-22
D Air
In air-conditioning of aeroplanes, using air as a refrigerant, the cycle used is
A Reversed Carnot cycle
B Reversed Joule cycle
C Reversed Brayton cycle
D Reversed Otto cycle
Window panes of aeroplanes are normally made of
A Perspex (PMMA)
B Teflon (PTFE)
C Bakelite (phenol formaldehyde)
D Polystyrene
The layer of the atmosphere which provides ideal conditions for flying on jet aeroplanes is ________
A Troposphere
B Stratosphere
C Ionosphere
D Exosphere
According to Raoult's law, "The vapor pressure exerted by component in a solution is proportional to the mole fraction of that component." Raoult's law is not applicable under the following assumption/condition.
A No component is concentrated at the surface of the solution
B The component molecules are non polar and are of almost equal size
C In the formation of solution, chemical combination/molecular association between unlike molecules takes place
D The attractive forces between like and unlike molecules are almost equal
Fugacity of a component in an ideal gas mixture is euqal to the partial pressure of that component in the mixture. The fugacity of each component in a stable homogeneous solution at contant pressure and temperature __________ as its mole fraction increases.
A Decreases
B Decreases exponentially
C Increases
D Remains constant
Relative volatility varies with the concentration of component for an ideal solution. The relative volatity of a binary mixture may be defined as the ratio of vapor pressure of component 'A' to that of component 'B', when
A Only vapor phase follows Raoult's law
B Only liquid phase obeys Dalton's law
C Liquid phase obeys Dalton's law and vapor phase obeys Raoult's law
D Vapor phase obeys Dalton's law and liquid phase obeys Raoult's law

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