A. Bicarbonates & sulphates of calcium and magnesium
B. Undesirable taste and odour
C. Bacteria
D. Its corrosiveness
Related Mcqs:
- 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 - Which of the following may be viewed as a catalyst in the manufacture of soda ash by Solvay process ?
A. NH3
B. NaCl
C. CaO
D. Coke - ____________________ process is used for producing soda ash?
A. Chamber
B. Chance
C. Tromp
D. Solvay - Which of the following is not required in the manufacture of soda ash by Solvay process ?
A. Ammonia
B. Limestone
C. Nitric acid
D. None of these - Dense soda ash used in the manufacture of glass, is chemically represented by__________________?
A. Na2CO3
B. Na2CO3.10H2O
C. Na2CO3.H2O
D. Na2HCO3 - Sodium carbonate (soda ash) is not used in the manufacture of___________________?
A. Fire extinguishers
B. Sugar
C. Baking powder
D. Detergents - In the production of soda ash by Solvay process, the by-product is____________________?
A. CaCl2
B. NH4Cl
C. NH3
D. NaOH - High magnesia lime is added to hot sugar cane juice (during the manufacture of sugar) to__________________?
A. Flocculate the impurities
B. Facilitate fast filtration
C. Both A. and B.
D. Neither A. nor B. - ______________ are added in lacquers to remove film brittleness and to improve adhereness?
A. Film forming materials
B. Plasticisers
C. Diluents
D. Solvents - Use of hydrated lime in water treatment_________________?
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.
