Manufacture of phthalic anhydride uses __________ as a catalyst.
Ni
Cr
V2O5
Al2O3
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- Poly Vinyl Chloride (P.V.C.) is a __________ material.
- Polythene is a/an __________ polymerisation product.
- In an integrated steel plant, NH3 present in coke oven gas is normally recovered as
- Hydrogenation of oil does not
- Use of water having dissolved oxygen in boilers promotes
- Coke used for the production of calcium carbide should have
- Lindane is
- Which of the following coals has the highest calorific value?
- Pick out the wrong statement.
- Electro deposition of metals i.e. electroplating is never done on
- SO2 is bubbled through hot sugar cane juice to
- Most commonly used rubber vulcanising agent is
- Sea water contains about __________ ppm of bromine.
- Ordinary glass is not a/an
- Sucrose is a disaccharide consisting of
- Margarine is a/an
- Alum [Al2(SO4)3] is used as a coagulant in water treatment to remove
- A unit operation is exemplified by the process of
- Which catalyst is used in the manufacture of ethylene oxide by oxidation of ethylene?
- __________ is the major constituent of the Portland cement.
- Frasch process is for
- __________ glass is used for the manufacture of optical glass.
- Flash point of most vegetable oils is about __________ °C.
- Dehydrogenation of Isopropanol produces
- Which of the following processes is absent in glass manufacturing process?
- Unsaturated oils compared to saturated oils have
- P.T.F.E. (Poly tetra fluoro ethylene) is commercially known as
- Caprolactam (a raw material for nylon-6 manufacture) is produced from
- Fermentator temperature during production of alcohol from molasses is around __________ °C.
- A mixture of chlorine & sodium bromide acts as a/an