The percentage by volume of argon in the air is about
A.2.97%
B.0.94%
C.0.01%
D.0.00%
Category: Chemical Technology Mcqs
Contact process for the manufacture of sulphuric acid yields
A.80% H2SO4 only
B.98% H2SO4 and higher
C.95% H2SO4 only
D.90% H2SO4 only
Diaphragm electrolytie cell produces
A.70% NaOH solution
B.60% NaOH solution
C.98.5% NaOH solution
D.10-12% NaOH solution
The principal raw materials for the manufacture of soda ash by Solvay process are
A.limestone and potassium chloride
B.dolomite and sodium hydroxide
C.limestone brine and coal
D.coal and caustic soda
Slaked lime is produced by
A.hydrogenation of quicklime
B.hydration of quicklime
C.dehydration of quicklime
D.dehydrogenation of quicklime
Solvay process for the manufacture of soda ash
A.can use low-grade brine
B.requires less electric power than the modified Solvay process
C.does not require NH3 plant investment
D.all of the above
