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A ring system exhibits aromatic characte...

A ring system exhibits aromatic character when it contains ......... `pi`-electrons.

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4n+2
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ICSE-HYDROCARBONS -FILL IN THE BLANKS TYPE QUESTIONS
  1. Convert : Carbon to acetylene

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  2. Reforming is the process of converting .......... and ....... alkanes ...

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  3. The knocking behaviour of a fuel with octane number 60 is the same as ...

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  4. The commonly used antiknock compound is ........

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  5. Compounds of the type R-Mg-X are known as..............

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  6. Sodalime is a mixture of .............. and ............. in the ratio...

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  7. Fluorination of alkenes takes place ................ and may result in...

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  8. The coversion of n-hexane to benzene involves ............

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  9. .......... is a better dehydrohalogenating agent as compared to .........

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  10. Alkenes and alkynes burn with a .......... . flame.

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  11. The best method for locating the position of double bond in an unknown...

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  12. The molecular weight of low density polythene ranges between .......an...

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  13. The dehydrohalogenation of a 1, 1-dihalide results in the formation of...

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  14. When acetylene is treated with ammonical cuprous chloride, a ............

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  15. The delocalised pi -molecular orbital in benzene contains three .........

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  16. A ring system exhibits aromatic character when it contains ......... p...

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  17. Furan (C4H2O) is an ......... compound.

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  18. o- and p-directing substituents are ..... substituents, whereas m-dire...

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  19. The first stage in the formation of coal in nature is .......... which...

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  20. The light oil fraction of coal tar mainly contains..........,............

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