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Whyare alkenes called olefins?...

Whyare alkenes called olefins?

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Because they are oily forming compounds i.e., most of the oils are unsaturated.
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SUBHASH PUBLICATION-HYDROCARBONS -THREE MARKS QUESTIONS AND ANSWERS
  1. Whyare alkenes called olefins?

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  2. Explain the action of chlorine on methane in the presence of sunlight.

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  3. Explain the machanism of chlorinantion of methane.

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  4. Explain the mechanism of addition of hydrogen bromide to propene.

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  5. How is the manufacture of LDPE & HDPE?

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  6. Explain controlled oxidation of methane to methanol and formaldehyde.

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  7. How to prepare alkene by hydrogenation of 2-butyne?

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  8. Explain dehydrohalogenation of a alkyl halide.

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  9. Discuss the structural elucidation of benzene.

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  10. Explain the mechanism of halogenation or chlorination of benzene.

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  11. Explain the mechanism of nitration of benzene .

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  12. Explain the mechanism of sulphonation of benzene?

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  13. Explain the mechanism of Friedel craft alkylation of benzene.

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  14. Explain Saytzeff's rule with an example.

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  15. Explain peroxide effect.

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  16. What happens when water is added to ethene and propene?

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  17. Discuss isomerism in alkynes.

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  18. Explain the structure of triple bond of ethynes.

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  19. Explain resonance and stability of benzene.

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  20. What are the conditions for a molecule to aromatic?

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  21. Using IIuckel's rule, show that cyclopentadienyl anion and naphthalene...

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