Which of the following is not produced on commercial scale from sea water ?

Related Mcqs:

1. Helium is produced on commercial scale from__________________?

   A. Air B. Natural gas C. Coke oven gas D. None of these...

2. Which of the following is not produced commercially from sea water ?

   A. Magnesium & potassium compounds B. Common salt C. Bromine D. Iodine...

3. Oxidation of ortho-xylene in presence of ______________ catalyst is done to produce phthalic anhydride on commercial scale ?

   A. Nickel B. Vanadium C. Alumina D. Iron...

4. Commercial scale production of hydrogen from iron-steam reaction represented by, 3Fe + 3H2O = Fe3O4 + 4H2, is not practised, as it is __________________?

   A. A slow reaction B. A discontinuous reaction (requiring regeneration of iron by water gas intermittently) C. Still in development stage (by employing fluidised bed technique) D. All A , B. and C...

5. Separation of fresh water from sea water can be done by the _______________ operation ?

   A. Osmosis B. Reverse osmosis C. Absorption D. Adsorption...

6. Sea water contains about ______________________ ppm of bromine ?

   A. 5 B. 70 C. 500 D. 1700...

7. Bromides contained in hot mother liquor is treated with ______________ during manufacture of bromine from sea water ?

   A. SO3 B. Cl2 C. NH3 D. SO2...

8. Sodium chloride content in sea water is about _______________ gms/liter?

   A. 2 B. 10 C. 25 D. 50...

9. Bromine content in sea water may be around _________________ ppm?

   A. 70 B. 640 C. 1875 D. 2500...

10. Commercial production of Vanaspati is done by _______________ of edible vegetable oils ?

    A. Hydrogenation B. Oxidation C. Hydrolysis D. Hydrocracking...