Question:
Which one of the following pairs is not correctly matched?
Which one of the following pairs is not correctly matched?
Show Hint
In the Wolf-Kishner reduction, a carbonyl group is reduced to a methylene group, not a hydroxymethyl group.
Updated On: Oct 17, 2026
- \( > \text{C} = \text{O} \to \text{CH}_2 \) (Clemmensen reduction)
- \( > \text{C} = \text{O} \to \text{CHOH} \) (Wolf-Kishner reduction)
- \( > \text{COCl} \to \text{CHO} \) (Rosenmund reduction)
- \( > \text{C} = \text{N} \to \text{CHO} \) (Stephen reduction)
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Correct reaction mechanisms.
- The Clemmensen reduction involves the reduction of a carbonyl group to a methylene group \( \text{CH}_2 \).
- The Wolf-Kishner reduction reduces a carbonyl group to a methylene group (not \( \text{CHOH} \)).
Thus, option (2) is incorrectly matched.
Thus, the correct answer is (2).
Was this answer helpful?
0
0
Top BITSAT Chemistry Questions
- Which of the following silver salts is insoluble in water ?
- Which of the following is deliquescent ?
- Among the following sets of quantum numbers. Which one is incorrect for $4d$ electron ?
- In the purification of impure nickel by Mond's process, metal is purified by:
- When $25\, g$ of a non-volatile solute is dissolved in $100\,g$ of water, the vapour pressure is lowered by $2.25 \times 10^{-1}\, mm$. If the vapour pressure of water at $20^{\circ} C$ is $17.5\, mm$, what is the molecular weight of the solute?
View More Questions
Top BITSAT carbonyl compounds Questions
Name of the following reaction is
- Which of the following esters cannot undergo Claisen self-condensation?
- The reagent(s) which can be used to distinguish acetophenone from benzophenone is (are):
\[ \text{Ph–CH(OH)–CHO} \xrightarrow[\text{H}_2\text{O}]{\text{HO}^-} Q \] P and Q are isomers. Identify Q.
- Which of the following processes is used for the preparation of acetone?
View More Questions
Top BITSAT Questions
- Two point charges $-q$ and $+ q$ are located at point's $(0, 0, - a)$ and, $(0, 0, a)$ respectively. The electric potential at a point $(0, 9, z)$, where $z > a$ is
- Which of the following must be known in order to determine the power output of an automobile?
- A large drop of oil (density $0.8 \,g / cm ^{3}$ and viscosity $\eta_{0}$ ) floats up through a column of another liquid (density $1.2\, g / cm ^{3}$ and viscosity $\eta_{L}$ ). Assuming that the two liquids do not mix, the velocity with which the oil drop rises will depend on :
- A body is projected vertically upwards at time $ t = 0$ and it is seen at a height $H$ at time $t_1$ and $t_2$ second during its flight. The maximum height attained is ($g$ is acceleration due to gravity)
- At what point of a projectile motion, acceleration and velocity are perpendicular to each other ?
View More Questions