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प्रश्न
Write a note on homologous series.
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उत्तर
A series of organic compounds each containing a characteric functional group and the successive members differ from each other in a molecular formula by a CH2 group is called homologous series.
Example:
- Alkanes:
Methane (CH4), Ethane (C2H6), Propane (C3H8) etc.. - Alcohols:
Methanol (CH3OH), Ethanol (C2H5OH) Propanol (C3H7OH) etc…
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संबंधित प्रश्न
Draw a formula for the first five members of the homologous series beginning with the given compound.
H–COOH
Identify the functional group in the following compound.
Identify primary, secondary, tertiary and quaternary carbon in the following compound.
What is meant by homologous series?
An organic compound containing carbon, hydrogen and oxygen is soluble in dil. H2SO4 and does not react with sodium metal or KMnO4. When it is heated with HI in excess, a single alkyl halide is obtained. The original compound can be ____________.
Which of the following statements is INCORRECT for the organic compounds which belong to homologous series?
How many 3° carbon atoms are present in 1, 4 dibromo-2-methylpentane?
Identify primary, secondary, tertiary and quaternary carbon in the following compounds.
\[\begin{array}{cc}
\ce{CH3}\phantom{.................}\\
|\phantom{....................}\\
\ce{CH3 - C - CH - CH2 - CH2 - CH3}\\
|\phantom{.....}|\phantom{...............}\\
\ce{CH3}\phantom{..}\ce{CH3}\phantom{.............}
\end{array}\]
Indicate the σ and π bonds in the following molecule:
\[\ce{HCONHCH3}\]
Identify primary, secondary, tertiary and quaternary carbon in the following compound.
\[\begin{array}{cc}
\ce{CH3}\phantom{.................}\\
|\phantom{....................}\\
\ce{CH3 - C - CH - CH2 - CH2 - CH3}\\
|\phantom{.....}|\phantom{................}\\
\ce{CH3}\phantom{.}\ce{CH3}\phantom{..............}
\end{array}\]
