Predict the product: from Chemistry Hydrocarbons

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 Multiple Choice QuestionsMultiple Choice Questions

261.

Which one of the following alkenes will react faster with H2 under catalytic hydrogenation conditions?

(R = Alkyl substituent)


262.

The least energetic conformation of cyclohexane is:

  • Boat form

  • Half chair form

  • Chair form

  • Twisted form


263.

By which one of the following compounds both CH4 and CH3 - CH3 can be prepared in one step?

  • CH3I

  • CH3OH

  • CH3CH2I

  • C2H5OH


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264.

Predict the product:


D.


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265.

The reduction of 4-octyne with H2 in the presence of Pd/CaSo4 quinoline gives:

  • trans-4-octene

  • cis-4-octene

  • a mixture of cis and trans-4-octene

  • a completely reduced product C8H18


266.

Addition of which of the following reagents to alkene is stereospecific:

I.Br2          II. KMnO4

III. BH3 THF/H2O2.NaOH

Select the correct reagent:

  • Both I and II

  • Both II and III

  • Both I and III

  • I, II and III


267.

Butyne-1 and butyne-2 can be distinguished by

  • H2SO4

  • AgNO3 + NH4OH

  • K2Cr2O7

  • NH4OH


268.

An unknown silver salt of monoacidic alkyne contains 67.08% silver. The structure of the alkyne is:

  • CH3-CCH

  • CH3-CCH-CH3

  • CH3-CH2-CCH

  • CHCH


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269.

What is obtained, when potassium succinate soluton is electrolysed ?

  • Ethane

  • Ethene

  • Ethyne

  • All of these


270.

CH3COOH P/Br2 CH2BrCOOH

This reaction is called

  • Schotton-Bauman reaction

  • Finkelstin reaction

  • Hell-Volhard-'Zelinsky reaction

  • none of the above


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