241. Salt is added in the kettle during soap manufacture to separate
Soap from lye
Glycerine from lye
The metallic soap
The unsaponified fat from soap
✅ The correct answer is option A.
Chemical Process MCQs
242. 90% of the caprolactum is converted to nylon-6 on its condensation polymerisation in the reactor maintained at __________ °C.
<0
Oct-30
250-280
500-600
✅ The correct answer is option B.
243. Cumene (isopropyl benzene) is made by
Oxidation of napthalene
Propylene alkylation of benzene
Polymerisation of a mixture of benzene & propylene
None of these
✅ The correct answer is option B.
244. Brackish water which contains mostly dissolved salt, can be purified by the __________ process.
Reverse osmosis
Sand filter
Lime soda
Permutit
✅ The correct answer is option A.
245. The gasification reaction represented by, C + H₂O = CO + H₂, is a/an __________ reaction.
Exothermic
Endothermic
Catalytic
Autocatalytic
✅ The correct answer is option B.
246. Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction temperature is maintained at __________ °C.
15-30
90-100
250-300
<0
✅ The correct answer is option A.
247. Which of the following is a detergent?
Fatty alcohol
Alkyl benzene sulphonate (ABS)
Fatty acids
Methylene chloride
✅ The correct answer is option B.
248. The biochemical treatment applied to sewage effluents is a process of
Dehydration
Reduction
Oxidation
Polymerisation
✅ The correct answer is option C.
249. Molasses is the starting material for the production of
Alcohol
Essential oil
Fatty acids
Massecuite
✅ The correct answer is option A.
250. Which of the following fuel gases contains maximum amount of carbon monoxide?
Coke oven gas
Water gas
Blast furnace gas
L.converter gas
✅ The correct answer is option D.