Question
Explain the structure of different disaccharides.

Answer

self

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

i. Tert$-$Butylamine cannot be prepared by the action of $NH_3$ on tert$-$butyl bromic. Explain why?
ii. Suggest a convenient method for the preparation of tert$-$butylamine.
  1. $30\ g$ of urea $(M = 60\ g\ mol^{-1})$ is dissolved in $846\ g$ of water. Calculate the vapour pressure of water for this solution if vapour pressure of pure water at $298\ K$ is $23.8\ mm\ Hg.$
  2. Write two differences between ideal solutions and non-ideal solutions.
Match the items of Column I and Column II.
  Column I   Column II
(i) Mathematical expression for rate of reaction. (a) Rate constant.
(ii) Rate of reaction for zero order reaction is equal to. (b) Rate law.
(iii) Units of rate constant for zero order reaction is same as that of. (c) Oder of slowest step.
(iv) Order of a complex reaction is determined by. (d) Rate of a reaction.
Answer the following questions$:$
Write balanced equations to represent what happens when.
  1. $Cu^{2+}$ is treated with $KI.$
  2. Acidified potassium dichromate solution is reacted with iron $(II)$ solution. $($ionic equation$).$
Attempt any five of the following:
$(a)$ Deficiency of which vitamin causes night-blindness.
$(b)$ Give two examples of reducing sugars.
$(c)$ Define the following terms:
$i.$ Glycosidic linkage
$ii.$ Native protein
$(d)$ Write function of carbohydrates in plants.
$(e)$ Differentiate between:
$i.$ Peptide linkage and Glycosidic linkage
$ii.$ Nucleoside and Nucleotide
$(f)$ What type of linkage holds together the monomers of $\text{DNA}$?
$(g)$ Write the product obtained when $D-$glucose reacts with $H_2N-OH.$
  1. Complete the following chemical reaction equations:
i. $\text{MnO}_{4(aq)}^{-}+\text{C}_{2}\text{O}_{4(aq)}^{2-}+\text{H}^{+}_{(aq)}\rightarrow$
ii. $\text{Cr}_{2}\text{O}_{7(aq)}^{2-}+\text{Fe}^{2+}_{(aq)}+\text{H}_{(aq)}^{+}\rightarrow$
  1. Explain the following observations about the transition/inner transition elements:
  1. There is in general an increase in density of element from titanium (Z=22) to copper (Z=29).
  2. There occurs much more frequent metal-metal bonding in compounds of heavy transition elements (3rd series).
  3. The members in the actinoid series exhibit a larger number of oxidation states than the corresponding members in the lanthanoid series.
Explain with two examples each of the following coordination entity, ligand coordination number, coordination polyhedron, homoleptic and heteroleptic.
  1. Name the element of $3d$ transition series which shows maximum number of oxidation states. Why does it show so?
  2. which transition metal of $3d$ series has positive $E^o(M^{2+}/M)$ value and why?
  3. Out of $Cr^{3+}$ and $Mn^{3+}$, which is a stronger oxidizing agent and why?
  4. Name a member of the lanthanoid series which is well known to exhibit $+2$ oxidation state.
  5. Complete the following equation:
$MnO^-_4+8H^++5e^-\rightarrow $
Discus in detail the following $C - H$ bond cleavage reactions of ether :
(i) Peroxide formation
(ii) Halogenation
Cyclobutyl bromide on treatment with magnesium in dry ether forms an organometallic A. The organometallic reacts with ethanol to give an alcohol B after mild acidification. Prolonged treatment of alcohol B with an equivalent of HBr gives 1-bromo-1-methyl cyclopentane $C$. Write the structures of $A, B$ and explain how the $C$ is obtained from B?