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The resonance stabilised carbocation for...

The resonance stabilised carbocation formed in the first step of the electrophilic substitution reaction is called …………..

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`sigma` -complex
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CHHAYA PUBLICATION-HYDROCARBONS-EXERCISE (FILL IN THE BLANKS)
  1. Benzene is a polymer of ………

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  2. The simplest hydrocarbon which reacts with ammoniacal silver nitrate t...

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  3. …………….is obtained when 2-butyne is passed through a mixture of 20% H2S...

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  4. Hexamethylbenzene is the trimer of ………….

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  5. When a mixture of …………..and Ag-powder is heated , …………is obtained as ...

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  6. The values of boiling and melting points of alkadienes are ………….than ...

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  7. Ozonolysis of acetylene forms…………….

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  8. Two molecules of HBr react with acetylene to form ………..

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  9. If an alkene forms only one type of carbonyl compound on ozonolysis, t...

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  10. CxHy+ …………………. to CO2+y/2H2O+"Heat"

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  11. Number of isomeric tribromobenze is ………

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  12. 1,3,5-trinitrobenzene is an ………….compound.

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  13. The resonance stabilised carbocation formed in the first step of the e...

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  14. …………….of benzene is carried out by using Noverset(oplus)O2Boverset(The...

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  15. When benzene is oxidised by atmospheric oxygen in presence of V2O5 at...

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  16. The product obtained due to Birch reduction of benzene when subjected ...

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  17. -COOH is a /an ………….group but COO^- is a /an …………..group.

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  18. -NH2 group …………electron density at ortho-/para-positions of the ring.

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  19. -NO2 group …………electron density at meta-position of the ring.

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  20. C-C bond lengths of benzene are……………

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