Question
Define the following terms:
  1. Glycosidic linkage.
  2. Invert sugar.
  3. Oligosaccharides.

Answer

  1. A linkage between two monosaccharide units through oxygen atom is called glycosidic linkage.
  2. Hydrolysis of sucrose brings about a change in the sign of rotation, from dextro (+) to laevo (–) and the product is named as invert sugar.
  3. Carbohydrates that yield two to ten monosaccharide units on hydrolysis, are called oligosaccharides.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Give the structural formula and IUPAC name of the following compounds:
  1. BHC
  2. DDT
How would you account for the following:
  1. Among lanthanoids, $\ce{Ln} \ (III)$ compounds are predominant. However, occasionally in solutions or in solid compounds,$\ +2 $ and $ \ +4$ ions are also obtained.
  2. The $\ce{E^o_{M^{2+}/M}}$ for copper is positive $(0.34V)$. Copper is the only metal in the first series of transition elements showing this behaviour.
  3. The metallic radii of the third $(5d)$ series of transition metals are nearly the same as those of the corresponding members of the second series.
The $\pi-$complexes are known for transition metals only. Why?
Write the chemical equation for the following conversion (not more than 2 steps):
Acetaldehyde to butane-1,3-diol.
For M2+/M and M3+/M2+ systems the $E ^{\circ}$ values for some metals are as follows : 
$\begin{array}{llll} Cr ^{2+} / Cr & -0.9 V & Cr ^3 / Cr ^{2+} & -0.4 V \\ Mn ^{2+} / Mn & -1.2 V & Mn ^{3+} / Mn ^{2+} & +1.5 V \\ Fe ^{2+} / Fe & -0.4 V & Fe ^{3+} / Fe ^{2+} & +0.8 V\end{array}$
Use this data to comment upon :
(i) the stability of Fe3+ in acid solution are compared to that of Cr3+or Mn3+ and
(ii) the case with which iron can be oxidised as compared to a similar process for either chromium or manganese metal.
What are nucleic acids ?
Give the oxidation state, d-orbital occupation and coordination number of the central metal ion in the following complexes : 
(i) $K _3\left[ Co \left( C _2 O _4\right)_3\right]$
(ii) cis - $\left[ Cr ( en )_2 Cl _2\right] Cl$
(iii) $\left( NH _4\right)_2\left[ CoF _4\right]$
(iv) $\left[ Mn \left( H _2 O \right)_6\right] SO _4$
$(A), (B)$ and $(C)$ are three non-cyclic functional isomers of a carbonyl compound with molecular formula $C_4H_8O$. Isomers $(A)$ and $(C)$ give positive Tollens’ test whereas isomer $(B)$ does not give Tollens’ test but gives positive Iodoform test. Isomers $(A)$ and $(B)$ on reduction with $Zn(Hg)$/ conc. $HCl$ give the same product $(D)$.
  1. Write the structures of $(A), (B), (C)$ and $(D)$.
  2. Out of $(A), (B)$ and $(C)$ isomers, which one is least reactive towards addition of $HCN?$
What is the secondary structure of proteins?
The electrical resistance of a column of $\ce{0.05M NaOH}$ solution of diameter $1 \ cm$ and length $50 \ cm$ is $\ce{5.55 \times 10^3 ohm}.$ Calculate its resistivity, conductivity and molar conductivity.