Embibe Experts Solutions for Chapter: Biomolecules, Exercise 2: Exercise-2

Inversion of sucrose $\left({\mathrm{C}}_{12}{\mathrm{H}}_{22}{\mathrm{O}}_{11}\right)$ is a first-order reaction and is studied by measuring the angle of rotation at different intervals of time.

$\underset{\stackrel{\mathrm{Sucrose}}{\mathrm{d}}}{{\mathrm{C}}_{12}{\mathrm{H}}_{22}{\mathrm{O}}_{11}}+{\mathrm{H}}_2\mathrm{O}\underset{\stackrel{\mathrm{Glucose}}{\mathrm{d}}}{\stackrel{{\mathrm{H}}^{+}}{⟶}{\mathrm{C}}_6{\mathrm{H}}_{12}{\mathrm{O}}_6}+\underset{\stackrel{\mathrm{Fructose}}{\mathrm{l}}}{{\mathrm{C}}_6{\mathrm{H}}_{12}{\mathrm{O}}_6}$

If $\left({\mathrm{r}}_{\infty }-{\mathrm{r}}_0\right)\equiv \mathrm{a}$ and$\left({\mathrm{r}}_{\infty }-{\mathrm{r}}_{\mathrm{t}}\right)\equiv (\mathrm{a}-\mathrm{x})$, (where, ${\mathrm{r}}_0$, ${\mathrm{r}}_{\mathrm{t}}$ and ${\mathrm{r}}_{\infty }$ are the angle of rotation at the start, at the time $\mathrm{t}$, and at the end of the reaction respectively), there is $50\%$ inversion when:

(i) (ii) 

Sum of moles of formaldehyde obtained in the reaction (i) and reaction (ii)?

Ketones do not reduce Tollen's reagents, but fructose with a keto group reduces it. Which one of the following is a correct statement?

$\mathrm{D}$-Mannose differs from $\mathrm{D}$-glucose in its stereochemistry at $\mathrm{C}-2$. The pyranose form of $\mathrm{D}$-mannose is:

Which of the following is/are reducing sugar:
 

Which of these are polysaccharides of glucose?

Fructose

The product $\mathrm{A}$ and $\mathrm{B}$ in the a above reaction are:

Correct statement about peptide linkage in a protein molecule is/are correct ?