351. Cellulose content of bamboo and ideal fibrous raw material for the manufacture of paper is __________ percent.
10
50
80
95
✅ The correct answer is option B.
Chemical Process MCQs
352. Commercial production of soda ash by Solvay process requires limestone, __________ as raw materials.
Coke and sand
Brine and coal
Coke and caustic soda
None of these
✅ The correct answer is option B.
353. Phenol is mainly used
To produce benzene
To produce phenol formaldehyde
To produce polyester resin
As a plasticiser for unsaturated polyster
✅ The correct answer is option B.
354. Metallic soap is __________ salt of fatty acids.
Sodium
Potassium
Both sodium & potassium
Aluminium or calcium
✅ The correct answer is option D.
355. The basic constituent of vegetable oils is
Triglyceride
Fatty acids
Fatty alcohol
Mono esters
✅ The correct answer is option A.
356. Fumigant insecticides
Kill insects, when they eat it
Emit poisonous vapour
Are absorbed throughout the plant
None of these
✅ The correct answer is option B.
357. Catalytic oxidation-dehydrogenation of methyl alcohol produces
Formaldehyde
Phenol
Acetone
Maleic anhydride
✅ The correct answer is option A.
358. Most widely and commonly used coagulant for the removal of suspended impurities in water is
Bleaching powder
Slaked lime
Alum
Copper sulphate
✅ The correct answer is option C.
359. A ‘unit process’ is exemplified by the
Distillation
Hydrogenation of oils
Absorption
Humidification
✅ The correct answer is option B.