A. Reduced softening capacity of zeolite
B. Increased dosage of chlorine to provide a disinfecting residual in the water
C. Easy removal of its hardness
D. None of these
Related Mcqs:
- Most easily and cheaply available fibrous raw material for paper manufacture available in India is bamboo. The yield of pulp produced from fibrous raw material by mechanical process is about _____________ percent?
A. 75
B. < 10
C. > 30
D. 50 - H2S is scrubbed from refinery gases by absorption using ________________________?
A. Dilute H2SO4
B. Ethanol amine
C. Chilled water
D. Tri-butyl phosphate - The catalyst used in the production of elemental sulphur from H2S (by oxidation-reduction) is _____________________?
A. Alumina
B. Silica gel
C. Platinum
D. Nickel - Permanent hardness of water is due to the presence of calcium & magnesium __________________?
A. Bi-carbonates
B. Sulphates & chlorides
C. Carbonate
D. None of these - Cellulose content of bamboo and ideal fibrous raw material for the manufacture of paper is ______________ percent?
A. 10
B. 50
C. 80
D. 95 - Sucrose content in the raw juice extracted from sugar cane is about _________________ percent?
A. 1 – 2
B. 15 – 20
C. 50 – 60
D. 80 – 85 - Commercial production of soda ash by Solvay process requires limestone, ___________________ as raw materials?
A. Coke and sand
B. Brine and coal
C. Coke and caustic soda
D. None of these - Commercial production of calcium carbide requires limestone and __________________ as raw materials?
A. Coke
B. Sand
C. Soda ash
D. Fuel oil - Which of the following is not a raw material used for the manufacture of ordinary glass ?
A. Iron oxide
B. Soda ash
C. Limestone
D. Silica - Nitro-glycerine absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as controlled explosive called dynamite. The raw material used for its manufacture are glycerine, nitric acid and___________________?
A. Sulphuric acid
B. Phosphoric acid
C. Hydrochloric acid
D. Hydrofluoric acid
