Important Questions of Hydrocarbons Chemistry | Zigya

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211.

The number of possible alkyns with molecular formula C5H8 is

  • 3

  • 4

  • 5

  • 6


212.

Ammoniacal silver nitrate form a white precipitate easily with

  • CH3C≡CH

  • CH3C≡C-CH3

  • CH3CH=CH2

  • CH2=CH2


213.

Which of the following compounds would have the highest boiling point ?

  • CH3CH2CH2CH3

  • CH3NH2

  • CH3OH

  • CH2F2


214.

The quality of diesel is expressed by

  • octane number

  • cetane number

  • antiknock compound

  • presence of additives


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215.

An alkene having molecular formula, C6H10 gives  OHC(CH2)4CHO, on ozonolysis. The alkene is

  • hexene-1

  • hexene-2

  • cyclohexene

  • 1-methylcyclohexene-1


216.

When petroleum is heated gradually, the first batch of vapours evolved will be rich in

  • kerosene oil

  • diesel oil

  • lubricating oil

  • petroleum ether


217.

The correct name for the following hydrocarbon is

   

  • tricycle [4.1.0] heptane

  • bicyclo [5.2.1] heptane

  • bicyclo [4.1.0] heptane

  • bicyclo [4.1.0] hexane


218.

The number of isomeric alkanes having the molecular formula C5H12 is

  • Three

  • Five

  • nine

  • Thirty two


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219.

Which organic compound is an electrolyte ?

  • CH3Cl

  • HCOOH

  • CH3OH

  • C6H12O6


220.

The petrol, octane number of which is 80, has

  • 20% n-heptane + 80% iso-octane

  • 20% n-heptane + 80% n-octane

  • 80% n-heptane + 20% iso-octane

  • 80% n-heptane+ 20% n-octane


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