KCET · Chemistry · Aldehydes and Ketones
The appropriate reagent for the following transformation is



- A \( \mathrm{Zn}-\mathrm{Hg} / \mathrm{HCl} \)
- B \( \mathrm{H}_{2} \mathrm{~N}-\mathrm{NH}_{2}, \mathrm{KOH} / \) ethylene glycol
- C \( \mathrm{Ni} / \mathrm{H}_{2} \)
- D \( \mathrm{NaBH}_{4} \)
Answer & Solution
Correct Answer
(B) \( \mathrm{H}_{2} \mathrm{~N}-\mathrm{NH}_{2}, \mathrm{KOH} / \) ethylene glycol
Step-by-step Solution
Detailed explanation
The reaction involved is






See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- Sodium metal crystallizes in B.C.C. lattice with edge length of \( 4.29 \mathrm{~A} \). The radius of sodium
atom isKCET 2015 Medium - Which can adsorb larger volume of hydrogen gas?KCET 2022 Easy
- \(\mathrm{XeF}_{6}\) on partial hydrolysis gives a compound \(X\), which has square pyramidal geometry ' \(X\) ' isKCET 2021 Easy
- Incorrectly matched pair isKCET 2020 Easy
- When the azimuthal quantum number has the value of 2 , the number of orbitals possible areKCET 2008 Easy
- For the reaction, \(A \rightleftharpoons B, E_a=50 \mathrm{~kJ} \mathrm{~mol}^{-1}\) and \(\Delta H=-20 \mathrm{~kJ} \mathrm{~mol}^{-1}\). When a catalyst is added \(E_a\) decreases by \(10 \mathrm{~kJ} \mathrm{~mol}^{-1}\). What is the \(E_a\) for the backward reaction in the presence of catalyst?KCET 2024 Medium
More PYQs from KCET
- Different types of respiratory organs like gills, book gills, book lungs and trachea are present inKCET 2022 Medium
- The charges \(+q\) and \(+q\) are placed at the vertices of an equilateral triangle of side If the net electrostatic potential energy of the system is zero, then is equal toKCET 2008 Easy
- The sum of \( 1^{s t} \mathrm{n} \) terms of the series
\[
\frac{1^{2}}{1}+\frac{1^{2}+2^{2}}{1+2}+\frac{1^{2}+2^{2}+3^{2}}{1+2+3}+\ldots
\]KCET 2016 Hard - If \( f(x)=\left\{\begin{array}{cc}\frac{\sin 3 x}{e^{2 x}-1} & x \neq 0 \\ k-2 & x=0\end{array}\right. \) is continuous at \( x=0 \), then \( k= \)KCET 2019 Medium
- The rate constant of a reaction is given by \(k=P Z e^{-E_{a} / R T}\) under standard notation. In order to speed up the reaction, which of the following factors has to be decreased?KCET 2020 Hard
- From the given combination of steps in PCR, identify the enzyme dependent step.KCET 2020 Easy