Question
Explain the structure of different disaccharides.

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A voltaic cell is set up at $25^\circ C$ with the followinng half$-$cell: $\ce{Al | Al^{3+}(0.001M)}$ and $\ce{Ni |Ni^{2+}(0.50M)}$
Calculate the cell voltage $\text{E}^{\circ}_{\text{Ni}^{2+}/\text{Ni}}\Big[=-0.25\text{V,E}^{\circ}_{\text{Al}^{3+}/\text{Al}}=-1.66\text{V}\Big]$
The decomposition of a hydrocarbon follows the equation. $\text{k}=(4.5\times10^{11}\text{s}^{-1})\text{e}^{-28000}\text{ K/T}$
Calculate $Ea.$
Explain the following terms:
(i) Coagulation
(ii) Electrophoresis
(iii) Tyndall Effect
(iv) Hardy Schulze's Rule
Match the complex ions given in Column $I$ with the colours given in Column $II$ and assign the correct code:
 
Column $I ($Complex ion$)$
 
Column $II ($Colour$)$
$a.$ $[Co(NH_3)_6]^{3+}$ $1.$
Violet
$b.$ $[Ti(H_2O)_6]^{3+}$ $2.$
Green
$c.$ $[Ni(H_2O)_6]^{2+}$ $3.$
Pale blue
$d.$ $[Ni(H_2O)_4(en)]^{2+} (aq)$ $4.$
Yellowish orange
 
 
$5.$
Blue
Code:
Give the preparation and two uses of the following:
(i) Bakelite,
(ii) Melamine,
(iii) Nylon-6,
(iv) Glyptal.
What is meant by the following terms ? Give an example in each case :
(i) Cyanohydrin, (ii) Acetal, (iii) Oxime (iv) Ketal, (v) Imine, (vi) 2,4-DNP derivatives, (vii) Schiff's Base.
Answer the following question:
How will you convert phenol to benzoic acid?
The experimental data for decomposition of N2O5
$\left[2 N_2 O _5 \rightarrow 4 NO _2+ O _2\right]$
in gas phase at 318 K are given below :
t/s$10^{-2} \times\left[ N _2 O _5\right] / mol L ^{-1}$
01.63
4001.36
8001.14
12000.93
16000.78
20000.64
24000.53
28000.43
32000.35

(i) Plot [N2O5] against t.
(ii) Find the half-life period for the reaction.
(iii) Draw a graph between log[N2O5] and t.
(iv) What is the rate law?
(v) Calculate the rate constant.
(iv) Calculate the half-life period from k and compare it with (ii).
Match the items of Column $I$ and Column $II$ on the basis of data given below$:$
$\text{E}^{\ominus}_{\text{F}_2/\text{F}^-}=2.87\text{V},\text{ E}^{\ominus}_{\text{Li}^+/\text{Li}}=-3.5\text{V},\text {E}^{\ominus}_{\text{Au}^{3+}/\text{Au}}=1.4\text{V},\text{ E}^{\ominus}_{ \text{Br}_2/\text{Br}^-}=1.09\text{V}$
 
Column $I$
 
Column $II$
$i.$ $F_2$ $a.$
Metal is the strongest reducing agent.
$ii.$ $Li$ $b.$
Metal ion which is the weakest oxidising agent.
$iii.$ $Au^{3+}$ $c.$
Non metal which is the best oxidising agent.
$iv.$ $Br^-$ $d.$
Unreactive metal.
$v.$ $Au$ $e.$
Anion that can be oxidised by $Au^{3+}$
$vi.$ $Li^+$ $f.$
Anion which is the weakest reducing agent.
$vii.$ $F^-$ $g.$
Metal ion which is an oxidising agent.
In a reaction between A and B, the inital rate of reaction (ro) was measured for different initial concentrations of A and B as given below :
$A / mol ^{-1}$0.200.200.40
$B / mol L ^{-1}$0.300.100.05
$r _0 / mol L ^{-1} s^{-1}$$5.07 \times 10^{-5}$$5.07 \times 10^{-5}$$1.43 \times 10^{-4}$
What is the order of the reaction with respect to A and B?