5401. Massecuite is
Used for paper making
Used as a cattle feed
Highly acidic in nature
None of these
✅ The correct answer is option D.
Chemical Engineering
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5402. Washing of coal is done to
Remove the inherent impurities
Remove the adhering impurities
Reduce the ash content
Both B and C
✅ The correct answer is option D.
5403. H₂S is scrubbed from refinery gases by absorption using
Dilute H₂SO₄
Ethanol amine
Chilled water
Tri-butyl phosphate
✅ The correct answer is option B.
5404. The product obtained on mixing calcium oxide with water is called
Quicklime
Slaked lime
Milk of lime
None of these
✅ The correct answer is option B.
5405. Nylon 66 is so named because the
Average degree of polymerisation of the polymer is 1966
Number of carbon atoms between two nitrogen atoms are 6
Number of nitrogen atoms between two carbon atoms are 6
Polymer was first synthesised in 1966
✅ The correct answer is option A.
5406. Oil is a/an
Mixture of glycerides
Mixture of glycerides of fatty acids
Solid at normal temperature
Ester of alcohols other than glycerine
✅ The correct answer is option B.
5407. Detergent is produced by the sulphonation of dodecyl benzene, which is an __________ reaction.
Endothermic
Exothermic
Irreversible
Both B and C
✅ The correct answer is option D.
5408. Trinitrotoluene (TNT), an explosive, is made by the nitration of
Nitrobenzene
Toluene
Nitrotoluene
Benzene
✅ The correct answer is option B.
5409. Coal tar is used as a
Binding material for coal briquettes
Fuel in rotary kiln
Binder in making carbon electrodes
All of the above
✅ The correct answer is option D.
5410. Styrene butadiene rubber (SBR) is
A natural rubber
A synthetic polymer
A synthetic monomer
Another name of silicone rubber
✅ The correct answer is option B.