MCQ
Benedict solution provides
- A$A{g^ + }$
- B$L{i^ + }$
- ✓$C{u^{ + 2}}$
- D$B{a^{ + 2}}$
✓
Answer
Correct option: C.
$C{u^{ + 2}}$
c
Benedict's solution is used to test for reducing sugars (free aldehyde group). The aldehyde gets oxidised and in the process, reduces the $Cu ^{+}$found in the complex provided by Benedict solution to form copper$(I)$ oxide, $Cu _2 O$.
Benedict's solution is used to test for reducing sugars (free aldehyde group). The aldehyde gets oxidised and in the process, reduces the $Cu ^{+}$found in the complex provided by Benedict solution to form copper$(I)$ oxide, $Cu _2 O$.
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
The heat of formations of $CO(g)$ and $C{O_2}(g)$ are $ - 26.4$ $kcal $ and $ - 94.0$ $ kcal$ respectively. The heat of combustion of carbon monoxide will be.....$kcal$
→The number of non-ionisable hydrogen atoms present in the final product obtained from the hydrolysis of $\mathrm{PCl}_{5}$ is :
→Given below are two statements: one is labelled as Assertion(A) and the other is labelled as Reason (R).
Assertion(A) : $E^{\circ}$ value for $Mn ^{3+} / Mn ^{2+}$ couple is much more positive than that of $E ^{\circ}$ value for $Cr ^{3+} / Cr ^{2+}$ or $Fe ^{3+} / Fe ^{2+}$.
Reason ( R ) : Mn have very high value of 3rd ionization energy in comparision to Cr and Fe .
In the light of the above statements, choose the most appropriate answer from the options given below:
→Assertion(A) : $E^{\circ}$ value for $Mn ^{3+} / Mn ^{2+}$ couple is much more positive than that of $E ^{\circ}$ value for $Cr ^{3+} / Cr ^{2+}$ or $Fe ^{3+} / Fe ^{2+}$.
Reason ( R ) : Mn have very high value of 3rd ionization energy in comparision to Cr and Fe .
In the light of the above statements, choose the most appropriate answer from the options given below:
An aqueous solution containing $5\%$ by weight of urea and $10\%$ by weight of glucose. Freezing point of solution is .......... $^oC$. [ $K_f$ for $H_2O$ is $1.86\, K \,mol^{-1}\, kg$ ]
→Which statement is incorrect
Assertion : The radius of the first orbit of hydrogen atom is $0.529\,\mathop A\limits^o$
Reason : Radius of each circular orbit $(r_n) - 0.529\,\mathop A\limits^o \,(n^2/Z),$ where $n = 1, 2, 3$ and $Z =$ atomic number.
→Reason : Radius of each circular orbit $(r_n) - 0.529\,\mathop A\limits^o \,(n^2/Z),$ where $n = 1, 2, 3$ and $Z =$ atomic number.
If equilibrium constant for reaction $2AB$ $\rightleftharpoons$ ${A_2} + {B_2}$, is $49$, then the equilibrium constant for reaction $AB$ $\rightleftharpoons$ $\frac{1}{2}{A_2} + \frac{1}{2}{B_2}$, will be
→Among the following the weakest base is
Molar heat capacity of water in equilibrium with the ice at constant pressure is
On adding solute to a solvent having vapour pressure $0.80\,atm$ , vapour pressure reduces to $0.60\,atm$. Mole fraction of solute is
→