Use of chlorine in the treatment of sewage
Helps in grease separation
Increases the biological oxygen demand (BOD)
Causes bulking of activated sludge
Aids in flocculation
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- Carborundum consists mainly of
- Temperature during hydrogenation of oil should not be more than 200°C, otherwise it will result…
- Contact process of sulphuric acid manufacture
- Starting material for the production of butadiene in India is
- Prussian blue is chemically represented by
- Salt cake is chemically represented by
- Concentration of NaOH solution produced by diaphragm electrolytic cell is about __________ percent.
- Production of one ton of cement requires about __________ tons of limestone.
- Which of the following is not present in bagasse fibre?
- Alcohol is produced by the
- Reaction of calcium carbide with water produces a gas, which is used
- Mercury electrolytic cells are preferred over diaphragm electrolytic cell (for production of caustic…
- Separation of fresh water from sea water can be done by the __________ operation.
- 'Hollander beater' machine used in the paper manufacturing plant does not accomplish the task of
- Which of the following is used as a coagulant in water treatment?
- Pick out the wrong statement.
- Phosphate rock is a raw material for the manufacture of
- Permanent hardness of water is due to the presence of calcium & magnesium
- Carbon content of pitch (residue of coal tar distillation) is around __________ percent.
- Which of the following is a constituent of vinegar?
- Salt is added in the kettle during soap manufacture to separate
- Bromides contained in hot mother liquor is treated with __________ during manufacture of bromine from…
- Presence of carbonaceous matter in the sewage
- Gelatine which is a nitrogenous organic protein is obtained by the hydrolysis of
- Comparing sulphate process with sulphite process, we find that __________ in the later.
- Enamels
- Stereospecific agents are exemplified by
- The amount of benzene present in pure Benzol is about __________ percent.
- Hydrogenation of oil/fat does not
- __________ acid is the main constituent of cotton seed oil.