A. NaOH
B. H2SO4
C. Hydrazine
D. Alum solution
Related Mcqs:
- Zeolite used in water softening process (cation exchange) is regenerated by washing with___________________?
A. Brine
B. Chloramines
C. Sodium bisulphite
D. Liquid chlorines - Anion exchanger is regenerated usually with ____________________?
A. NaOH
B. H2SO4
C. Hydrazine
D. Alum solution - 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 - Flexible foam (for mattresses) is usually made of_____________________?
A. PVC
B. Silicone
C. Polyurethanes
D. Polyamides - Which glass is usually used in optical work ?
A. Lead glass
B. High silica (borosilicate) glass
C. Photo-sensitive glass
D. Fibre glass - Essential oils are usually obtained using__________________?
A. Steam distillation
B. Extractive distillation
C. Solvent extraction
D. Leaching - Concentration of sulphide ores is done usually by____________________?
A. Roasting
B. Smelting
C. Froth floatation
D. Electromagnetic separation - In Kraft process of paper manufacture, white cooking liquor consists of caustic soda________________?
A. Sodium sulphide & sodium carbonate
B. Sodium sulphite & sodium carbonate
C. Sodium sulphite & sodium sulphide
D. None of these - Which of the following is an additional step in the manufacture of paper from bagasse as compared to that from bamboo ?
A. Depithing
B. Digestion
C. Bleaching
D. None of these - Molasses is the starting material for the production of ___________________ ?
A. Alcohol
B. Essential oil
C. Fatty acids
D. Massecuite
