Sea weeds are a source of which of the following elements?

Options :
  1. Argon
  2. Sulphur
  3. Vanadium
  4. Iodine


Answer and Explanation :-

Answer: Option 4

Explanation:

Seaweed is a macroscopic, multicellular, benthic marine algae. Seaweed is a source of iodine, primarily used in nutrition and other industrial and medicinal purposes. Ribbon seaweeds (sp. laminaria) contain iodine compounds which they obtain by extracting iodide ions from seawater. This iodine can be extracted from the seaweed by heating it in air to an ash, in which the iodine is present as iodide. The iodide is dissolved out of the residue by boiling water, the solution filtered and the iodide oxidised to iodine using hydrogen peroxide. The iodine colours the solution brown at this stage. Isolating the iodine from this solution can be done by solvent extraction, followed by evaporation of the solvent.

How do you rate this queston?  Very Easy  Easy  Average  Above Average  Tough

Previous Question : Which of the following instruments is used to measure Atmospheric humidity?

Next Question : Which of the following chemical compounds are known as Quartz crystals, normally used in quartz cloc...

Click here for free online test on General Science

Responses


 (Getemail alerts when others member replies)







You shouldn't judge someone until you've walk a mile through an underground tunnel in her uncomfortable shoes
-Ally Carter I'd Tell You I Love You But Then I'd Have to Kill You