is
higher than that in 
.
Why?
molecule.
Are the two S?0 bonds in this molecule
equal? [1]
[1]
[1]
related
to positive and negative deviations from Raoult's law? [2]
of 
increases
drastically, while that of 
increases
gradually?
[2]
,and
which
is more easily hydrolysed by aqueous KOH? Give
reason.
[2]
Or
The treatment of alkyl chlorides with aqueous KOH leads to
the formation of alcohols, but in presence of alcoholic KOH, alkenes are major
products. Explain. [2]
)
having density 1.06 g 
is
dissolved in 1 litre of water. The depression in freezing point observed for
this strength of acid was 0.0205°C. Calculate the van't Hoff factor and the
dissociation constant of acid. 
[3]
has
at 298
K. Calculate standard Gibbs energy and equilibrium constant of the cell
reaction. [3]
.
(ii) Among octahedral and tetrahedral crystal fields, in
which case the magnitude of crystal field splitting is larger? [1]
(ii) 
(iii)
[3x1]
is
acidic in nature.
(ii) Chromium is a typical hard metal but mercury is a
liquid.
(iii) The transition metals form a large number of complex
compounds.
(iv) The highest oxidation state of a metal is exhibited
in its oxide or fluoride only.
(v) E° value for the 
couple
is much more positive than that for
or
[5x1]
Or
(i) Complete the following reactions.
(a)
(b)
(ii)Which of the following has the maximum number of
unpaired electrons?
(iii) Give two consequences of lanthanide contraction.
(iv) Based on the data, arrange 
and 
in the
increasing order of stability of + 2 oxidation state.
(v) Calculate spin only magnetic moment of 
[
]
at a
constant volume 
| Experiment |
time
|
Total pressure (atm) |
| I II | 0 100 | 0.5 0.6 |
If 
, what
is the value of 
(b) Sucrose decomposes in acid solution into glucose and
fructose according to the first order rate law with 
hrs.
Calculate the fraction of sucrose which remains after 8 hrs.
(c) For a chemical reaction variation in concentration In [R]
vs time (min) plot is shown below.
(i) What is the order of the reaction?
(ii) What are the units of rate constant, k for the
reaction? [1+3+1]
forms
2, 4-DNP derivative reduces Tollen's reagent and undergoes Cannizzaro reaction.
On vigorous oxidation it gives 1,2-benzene dicarboxylic acid. Identify the compound
(A).
(b) Give simple chemical tests to distinguish between the
following pairs of compounds.
(i) Phenol and benzoic acid (ii)
Benzaldehyde and acetophenone. [3 + 3]
Or
(a) Predict the products of the following reactions.
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