Related Questions

Zeolite removes both temporary as well as permanent hardness of water by precipitating calcium and magnesium present in water as insoluble zeolites. Used zeolite is regenerated by flushing with the solution of
A Calcium sulphate
B Sodium chloride
C Sodium sulphate
D Magnesium chloride
Magnesium and calcium __________ cause temporary hardness of water.
A Carbonates
B Bicarbonates
C Phosphates
D Sulphates
Which of the following processes can remove both temporary as well as permanent hardness of water?
A Filtration
B Boiling
C Distillation
D None of these
Temporary hardness of water can be removed by
A Addition of alum (a coagulant)
B Boiling
C Filtration (through gravity sand filter)
D Addition of lime
Boiling of water containing temporary hardness produces
A CO2
B CaSO4
C CaHCO3
D None of these
Presence of dissolved impurities of __________ is responsible for the red brownish color of water.
A Carbonates
B Bi-carbonates
C Iron & manganese
D Arsenic
Which of the following functional components of a computer is responsible for the transient or temporary storage used by the CPU?
A Input
B Output
C CPU
D Memory
E Storage
If the total hardness of water is greater than its total alkalinity, the carbonate hardness will be equal to
A Total alkalinity
B Total hardness
C Total hardness total alkalinity
D Non carbonate hardness
Grain hardness is measured by the __________ hardness testing method.
A Knoop
B Rockwell F
C Shore sceleroscope
D Vicker's
Which of the following is not responsible for causing permanent hardness of water?
A Ca(HCO3)2
B CaCl2
C MgCl2
D None of these

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