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Which is the rate-determining step in ar...

Which is the rate-determining step in aromatic electrophilic substitution reaction ?

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The correct Answer is:
First step .i.e., formation of `sigma` -complex
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CHHAYA PUBLICATION-HYDROCARBONS-EXERCISE (VERY SHORT-TYPE QUESTIONS)
  1. Give an example of a group which increases the rate of aromatic electr...

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  2. Give an example of a group which decreases the rate of aromatic electr...

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  3. Name an ortho-/para -orienting group.

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  4. Name a meta-orienting group.

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  5. Give example of a reversible electrophilic substitution reaction.

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  6. Which is the smallest aromatic molecule / ion ?

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  7. What is the orientation of the deactivating halogen atoms ?

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  8. Which heterocyclic compound remains as an impurity in benzene obtained...

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  9. Which reagent is used in Birch reduction ?

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  10. Which type of flame is observed during combustion of benzene ?

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  11. Which electrophile is involved in desulphonation reaction ?

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  12. Give an example of a carcinogen.

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  13. Between HNO3 and H2SO4 which one acts as the base during formation of...

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  14. Which is the rate-determining step in aromatic electrophilic substitut...

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  15. Which step in aromatic electrophilic substitution reaction is exotherm...

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  16. Give an example of a neutral electrophile which participates in electr...

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  17. Give an example of a polynuclear hydrocarbon.

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  18. Which compound other than anhydrous AlCl3 can be used for ethylation ...

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  19. What is gammexane ? Mention its use.

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  20. What is the electrophile involved in nitration reaction ?

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