MCQ
$2,4 -DNP$ test can be used to identify :
  • A
    Amine
  • Aldehyde
  • C
    Ether
  • D
    Halogens

Answer

Correct option: B.
Aldehyde
b
$2,4 -DNP$ test is useful for the identification of carbonyl compounds.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

At higher altitude, boiling point of water is $95\,^oC$. The amount of $NaCl$ added to $1\, kg$ of water $(K_b = 0.52\, K\, mol^{-1}\,kg)$ in order to raise the boiling point of solution to $100\,^oC$ (assuming $90\%$ ionisation of $NaCl$) .......... $g$
The standard $EMF$ for the given cell reaction $Zn + C{u^{2 + }} = Cu + Z{n^{2 + }}$ is $1.10\,V$ at ${25^o}C$. The $EMF$ for the cell reaction, when $0.1\,M\,C{u^{2 + }}$ and $0.1\,M\,Z{n^{2 + }}$ solutions are used, at ${25\,^o}C$ is ..........$\mathrm{V}$
In the given reaction  $[X]$ will be :
Which will give same osazone when treated with phenyl hydrazine ?

$(A)$ Glucose  $(B)$ Gulose
$(C)$ Fructose  $(D)$ Maltose
$(E)$ Mannose

For the reaction,$\text{C}_2\text{​H}_5\text{​OH}+\text{HX}\xrightarrow{\text{Zn}\text{X}_2}​​\text{C}_2\text{​H}_5\text{​X}$, the order of reactivity is:
Methyl alcohol (methanol), ethyl alcohol (ethanol) and acetone (propanone) were treated with iodine and sodium hydroxide solutions. Which substances will give iodoform test
A freshly prepared radioactive element has a half-life of $2\  hours$. It emits radiation whose intensity is $64$ times the permissible safe level The minimum time after which it would be possible to work with this sample is .......... $hr$
What is the product formed in the following reaction

${{C}_{6}}{{H}_{5}}OH+CC{{l}_{4}}\underset{(2)\,\,{{H}^{+}}}{\mathop{\xrightarrow{(1)\,\,NaOH}}}\,$

Sucrose hydrolyses in acid solution into glucose and fructose following first order rate law with a half-life of $3.33\, h$ at $25^{\circ} C$. After $9 \,h ,$ the fraction of sucrose remaining is $f$. The value of $\log _{10}\left(\frac{1}{f}\right)$ is ..... $\times 10^{-2} .$

(Rounded off to the nearest integer) [Assume : $\ln 10=2.303, \ln 2=0.693$ ]

$KCN$ reacts readily to give a cyanide with