The most widely used coagulant for removing suspended impurities from water is
Bleaching powder
Chlorine
Calcium sulphate
Alum
- __________ is a thermosetting plastic.
- __________ iron is the purest form of iron.
- Production of one ton of cement requires about __________ tons of limestone.
- Starting raw material for the manufacture of Maleic anhydride is
- Potassium is kept & transported under
- __________ is used as a flux in the smelting of copper ore like chalcopyrite.
- In the manufacture of viscose rayon, the raw material used industrially is
- Pick out the wrong statement.
- Coke used for the production of calcium carbide should have
- Which of the following is not produced commercially from sea water?
- Oxygen is separated by distillation from air after its liquefaction. The boiling point of oxygen is…
- In an integrated steel plant, NH3 present in coke oven gas is normally recovered as
- The catalyst used in shift converter is
- Poly Vinyl Chloride (P.V.C.) is a __________ material.
- Which of the following is not an insecticide?
- 'Hollander beater' machine used in the paper manufacturing plant does not accomplish the task of
- Heating of __________ to 120°C, produces plaster of paris.
- Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst…
- Impurities present in brine is normally removed by treatment with
- Double Contact Double Absorption (DCDA) process is the most recent process for the manufacture of
- Molasses is the starting material for the production of
- Brackish water which contains mostly dissolved salt, can be purified by the __________ process.
- __________ process is used for the manufacture of sodium carbonate by ammonia soda process.
- H2S is scrubbed from refinery gases by absorption using
- Oxidation of SO2 to SO3 is favoured by
- Main constituents of natural rubber is
- Roasting of metallurgical ores is done mainly to
- __________ is obtained as a by-product in the manufacture of sodium hydroxide using brine.
- The catalyst used in the manufacture of DDT (from chloral and chlorobenzene) is
- Presence of sodium tripolyphosphate (an additive) in synthetic detergent