Alkenes
Alkenes
Unsaturated Hydrocarbons:
Those carbon compounds in which atleast one double or triple bond (or multiple bond) is present along with single bonds are called unsaturated compounds. These compounds generally burn with sooty or smoky flame due to their incomplete combustion. These are more reactive than saturated hydrocarbons and generally undergo addition reactions. Unsaturated compounds are further divided into following two classes: Alkenes and Alkynes
Alkenes or Olefins:
Those carbon compounds which have atleast 1 double bond along with single bonds are called alkenes. (A double bond is formed by the sharing of 2 pairs of electrons between the 2 carbon atoms). General formula of these compounds is . E.g. if an alkene have 2 carbon atoms, i.e. n =2 , than
=
(ethene).
| Name | Molecular Formula | Condensed Formula | Structural Formula |
| Ethylene |  |
 |
Which of the following are correct : (a) Unsaturated Hydrocarbon compounds which have atleast 1 double bond along with single bonds are called alkenes. (b) Unsaturated Hydrocarbon compounds generally burn with sooty or smoky flame due to their incomplete combustion. (c) Unsaturated Hydrocarbon compounds in which atleast one double or triple bond (or multiple bond) is present along with single bonds are called unsaturated compounds. | |||
| Right Option : D | |||
| View Explanation | |||
Unsaturated Hydrocarbon compounds in which atleast one ________________________ is present along with single bonds are called unsaturated compounds. | |||
| Right Option : D | |||
| View Explanation | |||
Unsaturated Hydrocarbon are compounds which have atleast __________________ along with single bonds are called alkenes. | |||
| Right Option : B | |||
| View Explanation | |||
Students / Parents Reviews [10]
I have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
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