Question

Silver mirror test is given by which one of the following compounds?

• A. Acetaldehyde
• B. Acetone
• C. Diethyl ether
• D. Benzophenone

Answer 1

Answer: (A)

All aldehydes including reducing sugar (as glucose, fructose) gives silver mirror test (with Tollens’ reagent)
$RCHO+2[Ag(N{H}_3{)}_2{]}^{+}+3O{H}^{-}\stackrel{\Delta }{\to }$
$\underset{\text{Silver mirror}}{RCO{O}^{-}+2Ag}\downarrow +4N{H}_3+2H_{2}O$
$(R=H,C{H}_3)$
Thus, acetaldehyde and formaldehyde give silver mirror test