What products do we get on electrolysis of saturated brine using steel cathode and graphite anode in an electrolytic cell ?

Related Mcqs:

1. 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

2. Diaphragm electrolytic cell as compared to mercury electrolytic cell_____________________?

   A. Produces 70% NaOH solution
   B. Requires less specific power consumption for the production of chlorine
   C. Requires lesser investment for similar capacity
   D. All A , B. and C

3. 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

4. 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

5. Concentration of NaOH solution produced by diaphragm electrolytic cell is about _______________ percent?

   A. 10
   B. 25
   C. 50
   D. 98

6. Which of the following is the most adverse factor challenging the choice of mercury electrolytic cell process for the production of caustic soda ?

   A. High cost of mercury
   B. High specific gravity of mercury
   C. Non-availability of high purity mercury
   D. Pollution of water stream by mercury

7. Concentration of NaOH solution produced by mercury electrolytic cell is about _______________ percent?

   A. 10
   B. 25
   C. 50
   D. 98

8. Mercury electrolytic cell produces 50-70% NaOH solution. Its operating temperature is ______________ °C?

   A. 25
   B. 60-70
   C. 150-200
   D. 250-300

9. ______________ 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

10. Good quality of edible salt is obtained from brine by the process of__________________?

    A. Solar evaporation
    B. Vacuum evaporation
    C. Freeze drying
    D. Electrolysis