A. 50
B. 70
C. 95
D. 80
A. 50
B. 70
C. 95
D. 80
A. Before filtration, reduces the bacterial load on filters
B. After filtration, combats the corrosiveness of water due to the presence of O2 & CO2
C. Is to adjust the pH value
D. All A , B. and C.
A. Ethyl magnesium chloride
B. Methyl magnesium chloride
C. Dichlorophenol
D. Monochloroacetic acid
A. Phthalic anhydride
B. Vinyl chloride
C. Maleic anhydride
D. Dacron
A. Pesticides
B. Plasticisers for unsaturated polyesters
C. Pain-relieving drugs (analgesic)
D. Tranquilisers
A. Bromine
B. Magnesium compounds
C. Potassium compounds
D. Sodium sulphate
A. Fat
B. Naphthalene
C. Cumene
D. Sucrose
A. Bi-carbonates
B. Sulphates & chlorides
C. Carbonate
D. None of these
A. Minimises its turbidity
B. Helps in controlling its taste and odour
C. Minimises its corrosiveness
D. None of these
A. Corrosion
B. Sequestration
C. Scale formation
D. None of these