Acetaldehyde acts as

Identify ‘B’ from the following reaction : ${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{C}\mathrm{H}\mathrm{O}+{\mathrm{N}\mathrm{H}}_2\mathrm{O}\mathrm{H}⟶\mathrm{A}\underset{\mathrm{\Delta }}{\overset{\mathrm{N}\mathrm{a}\mathrm{/}{\mathrm{C}}_2{\mathrm{H}}_5\mathrm{O}\mathrm{H}}{\to }}\mathrm{B}\backslash mathrm\{C\}\_\{2\}\; \backslash mathrm\{H\}\_\{5\}\; \backslash mathrm\{CHO\}+\backslash mathrm\{NH\}\_\{2\}\; \backslash mathrm\{OH\}\; \backslash longrightarrow\; \backslash mathrm\{A\}\backslash xrightarrow[\backslash Delta]\{\backslash mathrm\{Na\}\; /\; \backslash mathrm\{C\}\_\{2\}\; \backslash mathrm\{H\}\_\{5\}\; \backslash mathrm\{OH\}\}\; \backslash stackrel\{\}\{\}\; \backslash mathrm\{B\}$

Sodium borohydride does not reduce

An aldehyde when warmed with Zn/Hg and cone. HCl gives

Acetaldol is

Acetone can be reduced to propane, the reduction is called

Which of the following reagents can react with acetaldehyde to give water soluble white crystal-line solid?

Formalin is 40% aqueous solution of :

Which of the following compounds do not produce pink colour with Schiff s reagent?

Both aldehydes and ketones can react with