91. Reaction of an alcohol with organic acid is called the __________ reaction.
Saponification
Esterification
Neutralisation
Acidification
✅ The correct answer is option B.
Chemical Process MCQs
93. Presence of carbonaceous matter in the sewage
Causes reduction in its dissolved oxygen content thereby endangering the life of aquatic creatures
Reduces sulphate ions to sulphides causing obnoxious smell
Increases the quantity of chlorine used for its purification
All of the above
✅ The correct answer is option D.
94. Phenol formaldehyde is produced by condensation polymerisation. It is also known as
Teflon
Bakelite
Polyester
Nylon-66
✅ The correct answer is option B.
95. Raw materials required for the manufacture of __________ is acetylene and hydrochloric acid.
Phthalic anhydride
Vinyl chloride
Maleic anhydride
Dacron
✅ The correct answer is option B.
96. Ordinary glass is not a/an
Amorphous isotropic material
Supercooled liquid
Material with sharp definite melting point
Electrical insulator
✅ The correct answer is option C.
98. Graphite is a/an
Electrical insulator
Allotrope of carbon
Moderator used in nuclear reactor
Both B and C
✅ The correct answer is option D.
99. Function of thinner in a paint is to
Accelerate the oxidation of oil
Prevent gelling of the paint
Suspend pigments & dissolve film forming materials
Form a protective film
✅ The correct answer is option C.
100. Commercial production of Vanaspati is done by __________ of edible vegetable oils.
Hydrogenation
Oxidation
Hydrolysis
Hydrocracking
✅ The correct answer is option A.