Which of the following is a co-product during the manufacture of caustic soda by electrolysis of brine ?

Related Mcqs:

1. Which of the following processes does not produce Cl2 as a co-product during the manufacture of caustic soda ?

   A. Diaphragm electrolytic cell process
   B. Mercury electrolytic cell process
   C. Lime-soda process
   D. None of these

2. 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

3. Mercury cells for caustic soda manufacture, compared to diaphragm cells___________________?

   A. Require lower initial investment
   B. Require more power
   C. Produce lower concentration NaOH
   D. None of these

4. 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

5. 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

6. ______________ 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

7. 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

8. Exothermic neutralisation reaction between caustic soda and dodecylbenzene sulfonic acid produces sodium dodecylbenzene sulphate, which is a/an?

   A. Explosive
   B. Soap
   C. Detergent
   D. Analgesic drug

9. In Kraft process of paper manufacture, white cooking liquor consists of caustic soda________________?

   A. Sodium sulphide & sodium carbonate
   B. Sodium sulphite & sodium carbonate
   C. Sodium sulphite & sodium sulphide
   D. None of these

10. Which of the following is not required in the manufacture of soda ash by Solvay process ?

    A. Ammonia
    B. Limestone
    C. Nitric acid
    D. None of these