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You Are On Multi Choice Question Bank SET 351

17551. Enzymes are





17552. Multistage catalytic converter is not used in the





17553. The main product of high temperature carbonisation of coal is





17554. NDDB was established during whose tenture as Prime Minister?





17555. In an integrated steel plant, NH3 present in coke oven gas is normally recovered as





17556. Flexible foam (for mattresses) is usually made of





17557. Glycerine is a by-product of the __________ industry.





17558. One of the steps during refining of cane sugar consists of addition of hydrated lime to the sugar syrup followed by carbonation of the resulting solution. The purpose of this step is to





17559. Co-operative Flag was designed by ICA in





17560. Chalcopyrite is the main ore of





17561. The end bleaching agent used to move last traces of colour bodies from the pulp is





17562. Bio-degradable detergents





17563. Sea water contains about __________ ppm of bromine.





17564. Which allotrope of sulphur is insoluble in carbon disulphide ?





17565. Lubricating greases are a mixture of





17566. Metallic soap is __________ salt of fatty acids.





17567. Cation exchanger is regenerated usually with





17568. In contact process, SO3 is absorbed in 97% H2SO4 and not in water, because





17569. Bitterns is a/an





17570. The most widely used coagulant for removing suspended impurities from water is





17571. Main constituent of limestone is





17572. __________ is obtained as a by-product in the manufacture of sodium hydroxide using brine.





17573. Fat splitting catalyst is





17574. Phthalic anhydride is used





17575. Penicillin is separated from fermented broth by





17576. __________ process is used for producing soda ash.





17577. Bleaching powder (chemically known as calcium chloro hypochlorite) is commercially produced by the action of chlorine on





17578. Which of the following is an unsaturated fatty acid ?





17579. The yield of tar from high temperature carbonisation of dry coal is about __________ percent.





17580. __________ is used as a flux in the smelting of copper ore like chalcopyrite.





17581. Phenol formaldehyde is produced by condensation polymerisation. It is also known as





17582. Hydrogenation of oil does not





17583. Main constituents of cotton fiber is





17584. CaCl(OCl) is the chemical formula of





17585. Which is the most suitable dye for synthetic fibres ?





17586. Who first used the phrase ‘Each for All and All for Each’?





17587. In 1920,Land Mortage Bank was first established in





17588. Hydrolysis of sugar is called





17589. Sulphuric acid completely saturated with sulphur trioxide is called





17590. Fish contains about __________ percent oil.





17591. The main aim behind cooling the digested chip at the bottom portion of the digestor by injecting cold black liquor is to





17592. Polymethyl methacrylate (PMMA) is known as





17593. Coloured glass is obtained by mixing of colored salts. Addition of __________ oxide is done to impart greenish blue color to the glass.





17594. Percentage of alcohol in beer may be around __________ percent.





17595. Which of the following is an ore of iron ?





17596. Which of the following may be viewed as a catalyst in the manufacture of soda ash by Solvay process ?





17597. High purity nitrogen is used in





17598. Commercial production of soda ash by Solvay process requires limestone, __________ as raw materials.





17599. Naphthalene is removed from coke oven gas by





17600. The compressive strength of cement should not be less than about 110Kg/cm2 after three days & not less than 170Kg/cm2 after seven days. The fineness of an ordinary cement as determined by turbidimetric method should be about __________ cm2/gm.





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