MCQ
Fehling solution react with $HCHO$ to form precipitate of
- AWhite colour
- BYellow colour
- ✓Red colour
- DBlue colour
✓
Answer
Correct option: C.
Red colour
c
(c) $HCHO + 2C{u^{ + 2}} + 5O{H^ - }\mathop {\xrightarrow{{{\text{Fehling}}}}}\limits_{{\text{solution}}} \mathop {HCO{O^ - } + C{u_2}O + 3{H_2}O}\limits_{{\text{Red}}\,\,\,ppt} $
(c) $HCHO + 2C{u^{ + 2}} + 5O{H^ - }\mathop {\xrightarrow{{{\text{Fehling}}}}}\limits_{{\text{solution}}} \mathop {HCO{O^ - } + C{u_2}O + 3{H_2}O}\limits_{{\text{Red}}\,\,\,ppt} $
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Consider the following reaction The mechanism of reaction will be
The above reaction is
Lucas reagent is
The molar conductivity of a $0.5\, mol/dm^3$ solution of $AgNO_3$ with electrolytic conductivity of $5.76 \times 10^{-3}\, S\, cm^{-1}$ at $298\, K$ is ......... $S\, cm^2/mol$.
→Volume of water needed to mix with $10\,ml$ $10\,N$ $HN{O_3}$ to get $0.1\,N$ $HN{O_3}$ .......... $ml$
→Which of the following alloys contain only $Cu $ and $Zn$
→Find the species having the magnetic moment value of $5.92\ BM$
→Benzene reacts with chlorine to form benzene hexachloride in presence of
Arrange the following compound in decreasing order of reactivity towards nucleophilic addition reaction
→${\left( {I} \right)}$ ${{C_6}{H_5}COC{H_3}}$
${\left( {II} \right)}$ ${C{H_3}COC{H_3}}$
${\left( {III} \right)}$ ${C{H_3} - CHO}$
Which of the following is not true in case of reaction with heated copper at ${300\,^o}C$
→