Yields acid of higher concentration than chamber process
Yields acids of lower concentration than chamber process
Is obsolete
Eliminates absorber
✅ The correct answer is option A.
Chemical Process MCQs
Rotary kiln is not involved in the production of
Cement
Lime from limestone
Slaked lime from quick lime
None of these
✅ The correct answer is option C.
__________ 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.
Bromine content in sea water may be around __________ ppm.
70
640
1875
2500
✅ The correct answer is option A.
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.
__________ 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.
Alum is commercially produced from
Gypsum
Feldspar
Galena
Bauxite
✅ The correct answer is option D.
Which of the following is not produced commercially from sea water?
Magnesium & potassium compounds
Common salt
Bromine
Iodine
✅ The correct answer is option D.
Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt in a burner, because
Its calorific value is very less
Tar neutralises the residual acids present in pitch
It reduces viscosity and imparts fluidity for its transportation through pipelines at economic pressure drop
All of the above
✅ The correct answer is option C.
The metallic aluminium is obtained from pure alumina in the presence of fused cryolite by
Electrolysis
Electrolytic reduction
Electrolytic oxidation
None of these
✅ The correct answer is option B.