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Give a brief description of the principl...

Give a brief description of the principles of the following techniques taking an example in each case.
(a) Crystallisation (b) Distillation (c) Chromatography

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ICSE-ORGANIC CHEMISTRY : SOME BASIC PRINCIPLES AND TECHNIQUES -NCERT TEXT-BOOK EXERCISES (WITH HINTS AND SOLUTIONS )
  1. Give a brief description of the principles of the following techniques...

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  2. Give a brief description of the principles of the following techniques...

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  3. Give a brief description of the principles of the following techniques...

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  4. Describe the method, which can be used to separate two compounds with ...

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  5. What is the difference between distillation, distillation under reduce...

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  6. Discuss the chemistry of Lassaigne’s test.

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  7. Differentiate between the principle of estimation of nitrogen in an or...

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  8. Discuss the principle of estimation of halogens, sulphur and phosphoru...

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  9. Explain the principle of paper chromatography.

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  10. Why is nitric acid added to sodium extract before adding silver nitrat...

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  11. Explain the reason for the fusion of an organic compound with metallic...

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  12. Name a suitable technique of separation of the components from a mixtu...

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  13. Explain, why an organic liquid vaporises at a temperature below its bo...

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  14. Will "CC"l(4) give white precipitate of AgCl on heating it with silver...

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  15. Why is a solution of potassium hydroxide used to absorb carbon dioxide...

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  16. Why is it necessary to use acetic acid and not sulphuric acid for acid...

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  17. An organic compound contains 69% carbon and 4.8% hydrogen, the remaind...

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  18. A sample of 0.50 g of an organic compound was treated according to Kje...

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  19. 0.3780 g of an organic chloro compound gave 0.5740 g of silver chlorid...

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  20. In the estimation of sulphur by Carius method, 0.468 g of an organic s...

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