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

Related Mcqs:

1. Styrene (a monomer for the production of polystyrene) is commercially produced by ____________________?

   A. Catalytic dehydrogenation of ethyl benzene B. Dehydration of ethyl alcohol followed by hydrogenation C. Reacting ethylene oxide with acetaldehyde D. Fermentation of starch...

2. Commercially ethylene is produced from naphtha by ______________________?

   A. Catalytic cracking B. Catalytic dehydrogenation C. Pyrolysis D. Hydrocracking...

3. Hydrogen gas is not produced commercially (for nitrogenous fertiliser manufacture) by _____________________?

   A. Iron-steam reaction B. Electrolysis of water C. Steam reforming of naphtha D. Its cryogenic separation from coke oven gas...

4. Bleaching powder (chemically known as calcium chloro hypochlorite) is commercially produced by the action of chlorine on ____________________?

   A. Slaked lime B. Soda lime C. Calcium perchlorate D. None of these...

5. Alum is commercially produced from___________________?

   A. Gypsum B. Feldspar C. Galena D. Bauxite...

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

   A. Bromine B. Magnesium compounds C. Potassium compounds D. Sodium sulphate...

7. P.T.F.E. (Poly tetra fluoro ethylene) is commercially known as____________________?

   A. Bakelite B. Neoprene C. Teflon D. Nylon-66...

8. Nitro-glycerine absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as controlled explosive called dynamite. The raw material used for its manufacture are glycerine, nitric acid and___________________?

   A. Sulphuric acid B. Phosphoric acid C. Hydrochloric acid D. Hydrofluoric acid...

9. Polycaprolactam is commercially known as___________________?

   A. Nylon-6 B. Nylon-66 C. Dacron D. Rayon...

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

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