Combustion
Urea
Biomass burning
Trees
✅ The correct answer is option A.
Chemical Engineering MCQs
__________ is used as a flux in the smelting of copper ore like chalcopyrite.
Coke breeze
Lime powder
Silica/quartz
Dolomite
✅ The correct answer is option C.
Average human body contains about __________ percent water by weight.
20
40
70
85
✅ The correct answer is option C.
Fine grit present in sewage is removed in the __________ during sewage treatment.
Grit chamber
Detritus tank
Trickling filter
Skimming tank
✅ The correct answer is option B.
Bromine content in sea water may be around __________ ppm.
70
640
1875
2500
✅ The correct answer is option A.
__________ substances present in sewage are removed in grit chamber during sewage treatment.
Organic
Fatty
Inorganic
Dissolved
✅ The correct answer is option C.
Laboratory glass wares which reacts with hydroflouric acid, are made of the __________ glass.
Lead
Borosilicate
Soda lime
Alkali silicate
✅ The correct answer is option B.
The earth’s atmosphere is an envelope of gases present upto a height of about __________ kms.
10
200
1000
2000
✅ The correct answer is option B.
__________ glass has the lowest co-efficient of thermal expansion and hence is more heat resistant.
Pyrex
Soda lime
Lead
High silica
✅ The correct answer is option A.
Out of the following, TLV of __________ is maximum (about 500 ppm).
Carbon dioxide
Toluene
Carbon disulphide
Acetaldehyde
✅ The correct answer is option A.