MCQ
Which molecules has zero dipole moment
- A${H_2}O$
- ✓$C{O_2}$
- C$HF$
- D$HBr$
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$C{H_2} = C{H_2}\xrightarrow[{oxid}]{{Hypochloro}}$ $M\xrightarrow{R}\begin{array}{*{20}{c}}
{C{H_2} - OH} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_2} - OH}
\end{array}$
Where $M$ = molecule; $R$ = reagent $M$ and $R$ are

$C ( s )+\frac{1}{2} O _{2}( g ) \rightarrow CO ( g )+100 \;kJ$
When coal of purity $60 \%$ is allowed to burn in presence of insufficient oxygen, $60 \%$ of carbon is converted into $'CO'$ and the remaining is converted into $'CO _{2}$$'$.
The heat generated when $0.6 \;kg$ of coal is burnt is