Related Questions

The alum, when added as a coagulant in water
A Does not require alkalinity in water for flocculation
B Does not affect pH value of water
C Increases pH value of water
D Decreases pH value of water
Starting raw material for the manufacture of alum is
A Alumina
B Gypsum
C Bauxite
D Ammonium bicarbonate
Alum is commercially produced from
A Gypsum
B Feldspar
C Galena
D Bauxite
Alum is used as
A An analgesic
B A fertilizer
C A disinfectant
D A purifier for water
Alum stops bleeding in minor cuts because of
A Solvation
B Emulsion
C Dialysis
D Coagulation
Muddy water is treated with alum in purification process, it is termed as :
A Emulsification
B Absorption
C Adsorption
D Coagulation
Alum as a coagulant is found to be most effective when pH range of water is
A 2 to 4
B 4 to 6
C 6 to 8
D 8 to 10
Chemical name of 'alum' is
A Barium sulphate
B Aluminium sulphate
C Aluminium chloride
D Calcium sulphate
Which of the following words is in singular form?
A formulae
B agenda
C oases
D radius
Which one is in singular number?
A lice
B errata
C phenomenon
D mice

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