MCQ
The compound which gets dissolved in water is:
- AC2H6
- BC2H4
- CC2H2
- DC2H5OH
Explanation:
Ethanol has electronegative oxygen atom in it, and hence it takes part in hydrogen bonding with water.
Because of excessive hydrogen bonding with water, Ethanol dissolves in it.
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$\begin{array}{*{20}{c}}
{O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O}\\
{||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||}\\
{C{H_3} - C - C{H_2}CO{C_2}{H_5}}
\end{array}$ will give iodoform test
Reason : It does not contains $\begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O\,\,}\\
{\,\,\,\,{\kern 1pt} \,\,\,\,\,\,\,\,\,\,\,||\,\,\,}\\
{C{H_3} - C - }
\end{array}$ group
| Column$-I$ | Column$-II$ |
| $(a)\;Co^{+3}$ | $(i)\;\sqrt{8}\; B.M.$ |
| $(b)\;Cr^{+3}$ | $(ii)\;\sqrt{35}\; B.M.$ |
| $(c)\;Fe^{+3}$ | $(iii)\;\sqrt{3}\; B.M.$ |
| $(d)\;Ni^{+2}$ | $(iv)\;\sqrt{24}\; B.M.$ |
| $(v)\;\sqrt{15}\; B.M.$ |
$(a)\quad (b)\quad (c)\quad (d)$