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The cap of plastic bottle shown in the f...

The cap of plastic bottle shown in the figure is made up of polypropene and the bottle is made of plyethene.
(i) Why are polyethene and polyrpropene not echofriendly with us?
(ii) Differentiate between ethane and ethene and write the one important use of ethene.

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(i) Both polyethene and polypropene are polymers in nature. Whereas polyethene has ethene `(CH_(2)=CH_(2))` as the monomer unit, in the polymer polypropene, propene `(CH_(3)CH=CH_(2))` is the monomer. These are infact, non-biodegradable in nature and are therefore, non echofriendly.
(ii) Ethane `(H_(3)C-CH_(3))` is a saturated hydrocarbon since all the bonds present are single covalent bonds. Ethene `(H_(2)C=CH_(2))` is an unsaturated hydrocarbon and contains one C=C bond. Ethene upon polymerisation result in polyethene which is a very useful polymer.
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DINESH PUBLICATION-CARBON AND ITS COMPOUNDS-Long Answer Question
  1. (a) Give a chemical test to distinguish between saturated and unsatura...

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  2. (i) Write one advantage and disadvantage of using ethanol. (ii) Stat...

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  3. The cap of plastic bottle shown in the figure is made up of polypropen...

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  4. Account for the following statements: (i) Ethene is a covalent compo...

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  5. Write the common name of ethanoic acid and the functional group presen...

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  6. What is the difference between molecules of soap is added to water? Wi...

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  7. What are micelles? How is it formed when soap is added to water? Will ...

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  8. Both soap and detergent are some type of salts. What is the difference...

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  9. Write a chemical test to distinguish between ethanol ad ethanoic acid.

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  10. Vegetable oils generally have long unsaturated carbon chains. Give the...

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  11. A compound A (C(2)H(4)O(2)) reacts with Na metal to form a compound 'B...

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  12. An organic compound 'A' is an essential constituent of wine and beer. ...

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  13. (a) Distingusih between esterfication and saponification reactions...

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  14. (a) What are homologous series of compounds? List any two characterist...

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  15. (a) Draw the structure of methane by showing sharing of electron betwe...

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  16. (a) State the meaning of functional group in a carbon compound. Write ...

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  17. A salt X is formed and a gas is evolved when ethanoic acid reacts with...

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  18. (a) What are hydrocarbons ? Give examples. (b) Give the structural d...

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  19. Name the reaction which is commonly used in the conversion of vegetabl...

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  20. (a) Write the formula and draw electron dot structure of carbon tetra...

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