Question:
When propanone is treated with $Zn/Hg$ and Conc. HCl, propane is formed. This reaction is known as ________.
When propanone is treated with $Zn/Hg$ and Conc. HCl, propane is formed. This reaction is known as ________.
Show Hint
Clemmensen = Acidic ($HCl$); Wolf-Kishner = Basic ($KOH$).
Updated On: Jun 26, 2026
- Wolf-Kishner reaction
- Clemmensen reduction
- Hoffman reaction
- Kolbe's reaction
- Cannizzaro reaction
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Concept
Carbonyl groups ($C=O$) can be reduced to methylene groups ($CH_2$) using specific reagents.
Step 2: Meaning
$Zn/Hg$ (zinc amalgam) in concentrated HCl is the specific reagent for Clemmensen reduction.
Step 3: Analysis
Wolf-Kishner reduction uses hydrazine/KOH to achieve the same result but under basic conditions.
Step 4: Conclusion
The reaction described is the Clemmensen reduction. Final Answer: (B)
Carbonyl groups ($C=O$) can be reduced to methylene groups ($CH_2$) using specific reagents.
Step 2: Meaning
$Zn/Hg$ (zinc amalgam) in concentrated HCl is the specific reagent for Clemmensen reduction.
Step 3: Analysis
Wolf-Kishner reduction uses hydrazine/KOH to achieve the same result but under basic conditions.
Step 4: Conclusion
The reaction described is the Clemmensen reduction. Final Answer: (B)
Was this answer helpful?
0
0
Top KEAM Chemistry Questions
- The pH of a solution obtained by mixing 60 mL of 0.1 M BaOH solution at 40m of 0.15m HCI solution is
- $4\, g$ of copper was dissolved in concentrated nitric acid. The copper nitrate solution on strong heating gave $5\, g$ of its oxide. The equivalent weight of copper is :
- Green chemistry deals with
- Neopentyl bromide undergoes dehydrohalogenation to give alkenes even though it has no $\beta$- hydrogen. This is due to
- Plot of $ log\text{ }x/m $ against log $p$ is a straight line inclined at an angle of $ 45{}^\circ $ . When the pressure is $ 0.5 \,arm $ and Freundlich parameter. $ k $ is $ 10 $ , the amount of solute adsorbed per gram of adsorbent will be $ (log\text{ }5=0.6990) $
View More Questions
Top KEAM carbonyl compounds Questions
- Acetone can be converted to 2-methylpropan-2-ol using:
- Which of the following are neutral?
- Which one of the following involves nucleophilic addition?
- An organic compound with the molecular formula C\textsubscript{8H\textsubscript{8}O forms 2,4-DNP derivative, reduces Tollen's reagent and undergoes Cannizzaro reaction. On vigorous oxidation, it gives 1,2-benzenedicarboxylic acid. The organic compound is}
- An organic compound with the molecular formula C\textsubscript{8H\textsubscript{8}O forms 2,4-DNP derivative, reduces Tollen's reagent and undergoes Cannizzaro reaction. On vigorous oxidation, it gives 1,2-benzenedicarboxylic acid. The organic compound is}
View More Questions
Top KEAM Questions
- i.$\quad$ They help in respiration ii.$\quad$ They help in cell wall formation iii.$\quad$ They help in DNA replication iv. $\quad$They increase surface area of plasma membrane Which of the following prokaryotic structures has all the above roles?
- A body oscillates with SHM according to the equation (in SI units), $x = 5 cos \left(2\pi t +\frac{\pi}{4}\right) .$ Its instantaneous displacement at $t = 1$ second is
- The pH of a solution obtained by mixing 60 mL of 0.1 M BaOH solution at 40m of 0.15m HCI solution is
Kepler's second law (law of areas) of planetary motion leads to law of conservation of
- If $\int e^{2x}f' \left(x\right)dx =g \left(x\right)$, then $ \int\left(e^{2x}f\left(x\right) + e^{2x} f' \left(x\right)\right)dx =$
View More Questions