Temporary hardness of water is caused by
A.Bicarbonates of calcium and magnesium
B.Sulphates of calcium and magnesium
C.Chlorides of calcium and magnesium
D.Nitrates of calcium and magnesium
E.None of the above
A.Bicarbonates of calcium and magnesium
B.Sulphates of calcium and magnesium
C.Chlorides of calcium and magnesium
D.Nitrates of calcium and magnesium
E.None of the above
A.1 kg
B.5 – 7 kg
C.10 – 14 kg
D.15 kg
E.20 kg
A.consists of only a single chemical species
B.May have a number of chemical species that the composition remains constant
C.has no dissolved impurities
D.behaves as perfect gas
A.More than the coldest atmospheric temperature at which oil is to be pumped
B.Less than the coldest atmospheric temperature of which oil is to be pumped
C.More than 100?C
D.More than 0?C
E.Less than 0?C
A.Where a difference is observed in any microscopic property of the system between different times of states
B.Where a difference is observed in any microscopic property of the system between different times or states
C.Which occur in the direction of an intensive property or driving force contained within the system
D.Which require an agency outside the system to force the process
E.None of the above
A.Conduction
B.Convection
C.Radiation
D.Conduction and convection
E.None of the above
A.Cool the air
B.Reduce the volume of air
C.To cause moisture and oil vapour to drop out
D.Remove impurities from air
E.None of the above
A.Circular motion imparted to gases after combustion
B.Circular motion imparted to suction air
C.Radial motion imparted to fuel air mixture
D.Directional movement of fuel spray
E.None of the above
A.Volumetric efficiency
B.Compression ratio
C.Method of charging
D.Atomization
E.None of the above
A.Relief valve
B.Strainer
C.Over pressure shut down
D.Over speed shut down
E.Intercooler relief valve