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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 primary, secondary, tertiary, and quaternary carbon in the following compound.
\[\begin{array}{cc}\ce{CH3}\phantom{..................}\\
|\phantom{....................}\\\ce{CH3 - C - CH - CH2 - CH2 - CH3}\\|\phantom{.....}|\phantom{................}\\
\ce{CH3}\phantom{.}\ce{CH3}\phantom{..............}
\end{array}\]
Describe the classification of organic compounds based on their structure.
Write the molecular formula and possible structural formula of the first four members of homologous series of carboxylic acids.
Identify the number of carbon atoms and number of oxygen atoms respectively present in pyran molecule.
A pyranose ring consists of a skeleton of ______.
Identify primary, secondary, tertiary, and quaternary carbon in the following compound.
\[\begin{array}{cc}
\ce{CH3}\phantom{..................}\\
|\phantom{....................}\\
\ce{CH3 - C - CH - CH2 - CH2 - CH3}\\
|\phantom{....}|\phantom{................}\\
\ce{CH3} \ce{CH3}\phantom{..............}
\end{array}\]
Identify primary, secondary, tertiary and quaternary carbon in the following compounds.
\[\begin{array}{cc}
\ce{CH3}\phantom{.................}\\
|\phantom{...................}\\
\ce{CH3 - C - CH - CH2 - CH2 - CH3}\\
\phantom{}|\phantom{....}|\phantom{...............}\\
\phantom{}\ce{CH3}\phantom{.}\ce{CH3}\phantom{.............}
\end{array}\]
Identify primary, secondary, tertiary, and quaternary carbons in the following compound.
\[\begin{array}{cc}
\ce{CH3\phantom{.................}}\\
|\phantom{....................}\\
\ce{CH3 - C - CH - CH2 - CH2 - CH3}\\
|\phantom{....}|\phantom{................}\\
\ce{CH3 CH3\phantom{.............}}
\end{array}\]
Identify primary, secondary, tertiary and quaternary carbon in the following compound:
\[\begin{array}{cc}
\ce{CH3}\phantom{.................}\\
|\phantom{....................}\\
\ce{CH3 - C - CH - CH2 - CH2 - CH3}\\
|\phantom{....}|\phantom{................}\\
\ce{CH3}\phantom{.}\ce{CH3}\phantom{..............}\\
\end{array}\]
