The cumulated alkadiene is from Chemistry Hydrocarbons

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 Multiple Choice QuestionsMultiple Choice Questions

221.

An alkyl bromide is formed as the major product on reaction of 3-methyl-2-butene with hydrobromic acid under thermodynamic conditions. Which of the following is the correct IUPAC name of this product?

  • 2-bromo-3-methylbutane

  • 1-bromo-3-methylbutane

  • 2-bromo-2-methylbutane

  • 1-bromo-3-methyl-2-butene


222.

Which one of the following represents the major product of the reaction of benzene with 2, 2-dimethylpropyl chloride in presence of anhydrous aluminium chloride?

  • 2, 2-dimethylpropylbenzene

  • 1, 1-dimethylpropylbenzene

  • 1, 2-dimethylpropylbenzene

  • 1, 2-dimethyl-1-propenylbenzene


223.

Octane number of petrol can be improved by admixing it with which of the following chemicals?

  • Et4Pb

  • CH3OC(CH3)3

  • Both (a) and (b)

  • Pyrene


224.

In the following reaction, number of possible structure is

  • 1

  • 2

  • 5

  • 6


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225.

In Zeigler Natta polymerisation of ethylene, the active species is

  • AlCl3

  • Et3Al

  • CH2CH2

  • Ti3+


226.

The number of possible alkynes with molecular formula C5H8 is

  • 1

  • 3

  • 5

  • 8


227.

How many delocalised π-electrons are there in the following compound?

  

  • 1

  • 2

  • 3

  • 6


228.

Which of the following is an anti-knocking compound?

  • TEL

  • LTC

  • Freon

  • Gasoline


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229.

The cumulated alkadiene is


C.

(i) The alkadienes in which two double bonds are on adjacent carbon atoms are known as cumulated alkadienes.

(ii) The alkadienes, having alternate single and double bonds are known as conjugated dienes.

(iii) The alkadienes having two double bonds seperated by more than one single bond are known as isolated dienes.


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230.

The IUPAC name of 

   is

  • 4-bromo-2-chloro-5-iodo-1-fluorobenzene

  • 2-carbamoylhex-3-enal

  • 1-bromo-2-chloro-3-fluoro-6-iodobenzene

  • 2-bromo-1-chloro-5-fluoro-3-iodobenzene


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