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प्रश्न
Explain why is \[\ce{O = C =O}\] nonpolar while \[\ce{R - O - R}\] is polar.
उत्तर
\[\ce{O = C =O}\] molecule is linear so that the polarities of two C – O bonds get cancelled and the molecule is linear.
Ethers have structures similar to water and have angular or bent structure. Therefore, the polarity of two R – O groups does not get cancelled and these have net dipole moment. Thus, \[\ce{R - O - R}\] is polar.
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\[\begin{array}{cc}
\ce{CH3 - CH2 - CH - CHO ->[NaBH4]}\\
|\phantom{....}\\
\ce{CH3}\phantom{.}
\end{array}\]
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