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What is a homologous series? Explain with an example.


A homologous series is a group of compounds which contains the same functional group but different chain lengths. Thus, these have the same chemical properties but different physical properties.
Example:
CH3OH
C2H5OH
C3H7OH
C4H9OH
Above are members of the same homologous series having different chain length and same functional group.

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While cooking, if the bottom of the vessel is getting blackened on the outside, it means that:
  • the food is not cooked completely
  •  the fuel is not burning completely
  • the fuel is wet
  •  the fuel is burning completely.

Explain the nature of the covalent bond using the bond formation in CH3Cl.


Draw the electron dot structures for:
(a)    ethanoic acid
(b)    H2S
(c)    propanone
(d)F2’


How can ethanol and ethanoic acid be differentiated
on the basis of their physical and chemical properties.

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