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प्रश्न
Which of the following statements are usually correct for carbon compounds? These
- are good conductors of electricity
- are poor conductors of electricity
- have strong forces of attraction between their molecules
- do not have strong forces of attraction between their molecules
पर्याय
(i) and (iii)
(ii) and (iii)
(i) and (iv)
(ii) and (iv)
उत्तर
(ii) and (iv)
Explanation -
Cabon forms covalently bonded molecules which are seen to have strong bonds within the molecule but intermolecular forces are weak. Since the electrons are shared between atoms and no charged particles are formed, such covalent compounds are generally poor conductors of electricity.
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- \[\begin{array}{cc}
\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\phantom{..}\\
\phantom{}|\phantom{....}|\phantom{....}|\phantom{..}\\
\ce{H - C - C - C - OH}\\
\phantom{}|\phantom{....}|\phantom{....}|\phantom{..}\\
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\end{array}\] - \[\begin{array}{cc}
\phantom{...}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\phantom{....}\\
\phantom{...}|\phantom{....}|\phantom{....}||\phantom{....}\\
\ce{H - C - C - C - OH}\\
\phantom{...}|\phantom{....}|\phantom{.........}\\
\phantom{}\ce{H}\phantom{...}\ce{H}\phantom{.......}\\
\end{array}\] - \[\begin{array}{cc}
\phantom{......}\ce{H}\phantom{....}\ce{H}\phantom{....}\ce{O}\phantom{...}\ce{H}\phantom{...}\ce{H}\phantom{.......}\\
\phantom{....}|\phantom{....}|\phantom{....}||\phantom{....}|\phantom{....}|\phantom{....}\\
\ce{H} - \ce{C} - \ce{C} - \ce{C} - \ce{C} - \ce{C} - \ce{H}\\
\phantom{....}|\phantom{.....}|\phantom{........}|\phantom{....}|\phantom{....}\\
\phantom{....}\ce{H}\phantom{....}\ce{H}\phantom{........}\ce{H}\phantom{..}\ce{H}\phantom{.....}\\
\end{array}\] - \[\begin{array}{cc}
\phantom{......}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\phantom{......}\\
\phantom{....}|\phantom{....}|\phantom{....}|\phantom{....}|\phantom{....}\\
\ce{H - C - C - C = C - H}\\
\phantom{....}|\phantom{....}|\phantom{.............}\\
\phantom{....}\ce{H}\phantom{...}\ce{H}\phantom{.............}
\end{array}\]
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