Question

Alkaline dilute $KMn{O}_4$ solution is called

• A. Etard reagent
• B. Benedict reagent
• C. Mullikans reagent
• D. Baeyef's reagent

Answer 1

Answer: (D)

(i) Etard reagent : The chromyl chloride $\left(Cr{O}_{2}C{l}_2\right)$ dissolved in $CC{l}_4$ is known as Etard reagent. It is used to convert toluene into benzaldehyde.
(ii) Benedict reagent : It is an alkaline solution of cupric ions complexed with citrate ions.
It is used for the detection of sugars in urine because sugar contain aldehydic group.
(iii) Mullikan's reagent $10\%CaC{l}_2$ solution and $Zn$ dust is known as Mullikan's reagent. It is used in the detection of $-N{O}_2$ group.
(iv) Baeyer's reagent $1\%$ alkaline $KMn{O}_4$ solution is called Baeyer's reagent. It is used for the test of unsaturation.