5000 to 10000
20000 to 250000
500 to 5000
106 to l09
✅ The correct answer is option B.
Chemical Engineering MCQs
Very fine suspended and colloidal impurities are removed from water by a process called
Sedimentation
Coagulation
Disinfection
Softening
✅ The correct answer is option B.
Finely ground calcium aluminate & silicate is a/an
Cermet
Cement
Abrasive
Explosive
✅ The correct answer is option B.
Exothermic neutralisation reaction between caustic soda and dodecylbenzene sulphonic acid produces sodium dodecylbenzene sulphate, which is a/an
Explosive
Soap
Detergent
Analgesic drug
✅ The correct answer is option C.
Argon is the third largest constituent of air (followed by N₂ & O₂). Its percentage by volume in air is
0.14
0.34
0.94
1.4
✅ The correct answer is option C.
Which of the following is an endothermic reaction?
Absorption of SO₃ in 98% H₂SO₄
C + H₂O = CO + H₂
Thermal dissociation of iron pyrites
Both B and C
✅ The correct answer is option D.
‘Hollander beater’ machine used in the paper manufacturing plant does not accomplish the task of
Final rolling out of paper
Cutting of fibres
Hydration of fibres
Fibrillation of fibre
✅ The correct answer is option A.
Which glass is usually used in optical work?
Lead glass
High silica (borosilicate) glass
Photo-sensitive glass
Fibre glass
✅ The correct answer is option C.
Salt is the basic raw material for the manufacture of
Cement
Glass
Potteries
Caustic soda
✅ The correct answer is option D.
Pick out the exothermic reaction out of the following:
C + H₂O = CO + H₂
CaC₂ + H₂O = Ca(OH)₂ + C₂H₂
MgCO₃ = MgO + CO₂
All of the above
✅ The correct answer is option B.