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Sea is the greatest source of some halog...

Sea is the greatest source of some halogens. Comment.

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Sea water contains chlorides, bromides and iodides of sodium, potassium, magnesium and calcium. NaCl is the most abundant (2.5% by mass) among all of these. Certain forms of marinc life contain iodine in their systems. Various sea weeds, contain upro 0.5% of iodine and chile saltpetre contains upto 0.2% of sodium iodate. NaCl and carnallite, `(KCl*MgCl_(2)*6H_(2)O)` etc., are present in the deposits of dried up seas.
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ARIHANT PUBLICATION-GROUP 17 ELEMENTS : HALOGEN FAMILY-QUESTIONS FOR PRACTICE (Short Answer Type I Questions)
  1. Sea is the greatest source of some halogens. Comment.

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  2. Arrange the following in the order of property indicated set. F(2),...

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  3. Arrange the following in the order of property indicated for set. HF...

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  4. Why are halogens coloured ?

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  5. HF is a liquid whereas HCl is a gas. Explain.

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  6. HF is less volatile than HCl. Explain.

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  7. Explain why inspite of nearly the same electronegativity, nitrogen for...

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  8. Write the reactions of F(2) and Cl(2) with water.

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  9. What happens when potassium bromide is treated with warm conc. sulphur...

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  10. What happens when chlorine gas is passed through cold solution of NaOH...

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  11. How does the bleaching action of chlorine differ from that of sulphur ...

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  12. Why does chlorine exhibit bleaching action only in the presence of wat...

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  13. How can you prepare CI2 from HCl and HCI from Cl2 ?

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  14. What happens when NaCl is treated with sulphuric acid in presence of M...

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  15. Write the balanced equations for the following: Chlorine gas is pas...

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  16. Explain what happens when HCl gas is passed through concentrated NaCl ...

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  17. Why hydroiodic acid cannot be prepared by reacting KI with concentrate...

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  18. Why HF cannot be stored in glass bottle ?

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  19. Explain. Why fluorine forms only one oxoacid, HOF?

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  20. With what neutral molecules is Cl O^(-) isoelectronic? Is that molecul...

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