MCQ
Aldehydes and ketones can be reduced to corresponding hydrocarbons by
- ARefluxing with water
- BRefluxing with strong acids
- CRefluxing with soda amalgam and water
- ✓Refluxing with zinc amalgam and concentrated $HCl$
✓
Answer
Correct option: D.
Refluxing with zinc amalgam and concentrated $HCl$
d
(d) $RCHO + 4H\xrightarrow{{Zn - Hg/HCl}}R - C{H_3} + {H_2}O$
(d) $RCHO + 4H\xrightarrow{{Zn - Hg/HCl}}R - C{H_3} + {H_2}O$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
During the race of complex compounds, finish line is fixed by the achieving $E.A.N.$ value equal to the atomic number of corresponding inert gas. Then which of the following complex is present at finish line
→Which of the following does not reduce Benedict's solution
$1$ mole of $Fe^{2+}$ ions are oxidised to $Fe^{3+}$ ions with the help of (in acidic medium)
→The plot of osmotic pressure (П) vs concentration $\left(\mathrm{mol} \mathrm{L}^{-1}\right)$ for a solution gives a straight line with slope $25.73 \mathrm{~L} \mathrm{bar} \mathrm{mol}^{-1}$. The temperature at which the osmotic pressure measurement is done is
→(Use $\mathrm{R}=0.083 \mathrm{~L}$ bar mol $\mathrm{m}^{-1} \mathrm{~K}^{-1}$ )
A $100\, mL$ solution was made by adding $1.43\, g$ of $Na _{2} CO _{3} \cdot xH _{2} O .$ The normality of the solution is $0.1$ $N.$ The value of $x$ is..........
→(The atomic mass of $Na$ is $23\, g / mol$ ) :
In which of the following pairs, the outer most electronic configuration will be the same ?
When phenol is allowed to react with $B{r_2}$ in $(i)$ $C{S_2}$ solution and $(ii)$ in aqueous solution, the resulting compounds are
→The reaction of ozone with oxygen atoms in the presence of chlorine atoms can occur by a two step process shown below
→${O_3}(g)\, + \,C{l^ * }(g)\, \to \,{O_2}(g) + Cl{O^ * }(g)$ ..... $(i)$ $[{K_i} = 5.2 \times {10^9}\,\,L\,mo{l^{ - 1}}\,{s^{ - 1}}]$
$Cl{O^ * }(g) + {O^ * }(g)\, \to \,{O_2}(g) + \,C{l^ * }(g)$ ..... $(ii)$ $[{K_{ii}} = 2.6 \times {10^{10}}\,\,L\,mo{l^{ - 1}}\,{s^{ - 1}}]$
The closest rate constant for the overall reaction
${O_3}(g){\mkern 1mu} + {\mkern 1mu} {O^*}(g){\mkern 1mu} \to {\mkern 1mu} 2{O_2}(g)$ is ........... $L\,\,mo{l^{ - 1}}\,{s^{ - 1}}$
Which one of the following biomolecules is insoluble in water
Which of the following is produced during the following reaction?
$\text{CO(g)} + \text{H}_2\text{(g)}\xrightarrow[\text{ZnO}\text{Cr}_2\text{O}_3]{575\text{k}}$
→$\text{CO(g)} + \text{H}_2\text{(g)}\xrightarrow[\text{ZnO}\text{Cr}_2\text{O}_3]{575\text{k}}$