MCQ
Bayer’s reagent used to detect olifinic double bond is
- Aacidified $KMnO_4$
- Baqueous $KMnO_4$
- ✓$1\%$ alkaline $KMnO_4$ solution
- D$KMnO_4$ in benzene
$S$ it's $1\,\%$ alkaline $KMnO _4$ solution
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| List $I$ | List $II$ |
| $A$ van't Hoff factor, $i$ | $I$ Cryoscopic constant |
| $B$ $k _{ f }$ | $II$ Isotonic solutions |
| $C$ Solutions with same osmotic pressure | $III$ $\frac{Normal\,molar\,mass}{Abnormal\,molar\,mass}$ |
| $D$ Azeotropes | $IV$ Solutions with same composition of vapour above it |
Choose the correct answer from the options given below :
$\begin{array}{*{20}{c}}
{\,\,\,\,\,O} \\
{\,\,\,\,\,||} \\
{HOC{H_2}C{H_2} - C - OC{H_2}C{H_3}}
\end{array}$ $\xrightarrow{{PCC}}(A)\,\xrightarrow[{(1\,\,molar\,\,equivalent)}]{{{H_2}C \equiv CHMgBr}}(B)$ $\xrightarrow{{N{H_4}Cl\,/\,{H_2}O}}\,(C)\,\,\xrightarrow[{{H_2}O}]{{KOH}}\,$ $\xrightarrow{{{H_3}{O^ \oplus }}}\,\,\xrightarrow[{pyridine}]{{\begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,O} \\
{\,\,\,\,\,\,||} \\
{{{(C{H_3} - C)}_2}O}
\end{array}}}(D)$