91
Triple superphosphate is made by reacting phosphoric rock with
1
phosphoric acid
2
nitric acid
3
sulphuric acid
4
hydrochloric acid
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92
After feeding raw materials to the kiln till production of cement clinkers, what is the correct order of reaction zones?
1
Calcining-Drying-Clinkering
2
Drying-Calcining-Clinkering
3
Clinkering-Drying-Calcining
4
Clinkering-Calcining-Drying
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Answer: Drying-Calcining-Clinkering
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93
A turbine is used to convert
1
kinetic energy to mechanical energy
2
mechanical energy to hydraulic energy
3
hydraulic energy to mechanical energy
4
None of the above
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Answer: hydraulic energy to mechanical energy
94
Junker's calorimeter is used to determine the calorific value of
1
gaseous fuel
2
liquid fuel
3
pulverised coal
4
solid fuel
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95
The main constituent of natural gas is
1
CH4
2
C2H2
3
C2H4
4
C2H6
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96
Which of the following fraction of a crude will have maximum API (i.e., °API)?
1
Diesel
2
Gasoline
3
Atmospheric gas oil
4
Vacuum gas oil
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97
DCDA process is the most recent process for the manufacture of
1
HN03
2
H2S04
3
HC1
4
None of the above
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98
The widely used method for conditioning of boiler feed-water is
1
cold lime process
2
coagulation
3
hot lime process
4
sequestration
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99
In a centrifugal pump, the liquid enters the pump
1
at the centre
2
at the bottom
3
at the top
4
from the sides
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100
The most common method of producing hydrogen from hydrocarbon is known as
1
steam reforming
2
partial oxidation
3
steam blowing
4
complete oxidation
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