A. Freeze drying
B. Electrolytic
C. Solar evaporation
D. Vacuum evaporation
Related Mcqs:
- Good quality of edible salt is obtained from brine by the process of__________________?
A. Solar evaporation
B. Vacuum evaporation
C. Freeze drying
D. Electrolysis - Chlorine gas is produced by the electrolysis of brine (NaCl solution with solid NaCl make up) in mercury electrolytic cell. Which of the following is the anodic reaction ?
A. Oxidation of Na+ ions
B. Oxidation of Cl- ions
C. Reduction of Na+ ions
D. Reduction of Cl- ions - Wet chlorine gas produced during electrolysis of brine is dehydrated by__________________?
A. Spraying 66° Be H2SO4 counter current to the flow of the gas
B. Passing it through a bed of diatomaceous earth
C. Passing it through a bed of silica gel
D. None of these - What products do we get on electrolysis of saturated brine using steel cathode and graphite anode in an electrolytic cell ?
A. Cl2 & Na
B. Cl2 & H2
C. O2 & H2
D. Cl2, H2 & NaOH solution - ______________ is obtained as a by-product in the manufacture of sodium hydroxide using brine ?
A. Chlorine
B. Ammonium chloride
C. Sodium carbonate
D. Sodium bi-carbonate - Impurities present in brine is normally removed by treatment with ?
A. NH3 and CO2
B. Lime and soda ash
C. Lime, ammonia and carbon
D. All A , B. and C. - Which of the following is a co-product during the manufacture of caustic soda by electrolysis of brine ?
A. Na2CO3
B. NaHCO3
C. H2
D. None of these - Which of the following is the main constituent of the mother liquor produced in salt industry ?
A. Quick lime
B. Glauber’s salt
C. Salt petre
D. Bromine - Metallic soap is ________________ salt of fatty acids ?
A. Sodium
B. Potassium
C. Both sodium & potassium
D. Aluminium or calcium - Detergent is produced by the sulphonation of dodecyl benzene, which is an ________________ reaction?
A. Endothermic
B. Exothermic
C. Irreversible
D. Both B. and C.
