White
Black
Yellow
Blue
✅ The correct answer is option A.
Chemical Process MCQs
372. Molecular weight of plastics ranges from
5000 to 10000
20000 to 250000
500 to 5000
106 to l09
✅ The correct answer is option B.
373. Very fine suspended and colloidal impurities are removed from water by a process called
Sedimentation
Coagulation
Disinfection
Softening
✅ The correct answer is option B.
374. High temperature carbonisation of coal produces
Inferior coke compared to low temperature carbonisation
Less of gases compared to liquid products
Larger quantity of tar compared to low temperature carbonisation
None of these
✅ The correct answer is option D.
375. Finely ground calcium aluminate & silicate is a/an
Cermet
Cement
Abrasive
Explosive
✅ The correct answer is option B.
376. 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.
377. 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.
378. Zeolite used in water softening process (cation exchange) is regenerated by washing with
Brine
Chloramines
Sodium bisulphite
Liquid chlorines
✅ The correct answer is option A.
379. Polycaprolactum is commercially known as
Nylon-6
Nylon-66
Dacron
Rayon
✅ The correct answer is option A.
380. Which catalyst is used in the manufacture of ethylene oxide by oxidation of ethylene?
AgO
Al2O₃
ZnCl₂
FE₂O₃
✅ The correct answer is option A.