Question
Explain the cyclic structure of glucose.

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Explain the energy distribution curve of gaseous molecules and also discuss the effect of temperature on it.
Match the items of Column I and Column II.
 
Column I
 
Column II
i.
Lechlanche cell
a.
Cell reaction 2H2 + O2 ⎯→ 2H2O
ii.
Ni–Cd cell
b.
Does not involve any ion in solution and is used in hearing aids.
iii.
Fuel cell
c.
Rechargeable.
iv.
Mercury cell
d.
Reaction at anode, Zn ⎯→ Zn2+ + 2e-
 
 
e.
Converts energy of combustion into electrical energy.
Match the items given in Column I with the type of solutions given in Column II.
 
Column I
 
Column II
i.
Soda water
a.
A solution of gas in solid.
ii.
Sugar solution
b.
A solution of gas in gas.
iii.
German silver
c.
A solution of solid in liquid.
iv.
Air
d.
A solution of solid in solid.
v.
Hydrogen gas in palladium
e.
A solution of gas in liquid.
 
 
f.
A solution of liquid in solid.
Explain valence bond theory for coordination compounds.
Describe how does the enthalpy of reaction remain unchanged when a catalyst is used in the reaction.
Describe graphically the experimental method of measuring the conductivity of electrolyte solutions (ionic solution).
Rate constant for a first order reaction has been found to be 2.54 × 10-3s-1. Calculate its three-fourth life.
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.
F2
a.
Metal is the strongest reducing agent.
ii.
Li
b.
Metal ion which is the weakest oxidising agent.
iii.
Au3+
c.
Non metal which is the best oxidising agent.
iv.
Br-
d.
Unreactive metal.
v.
Au
e.
Anion that can be oxidised by Au3+
vi.
Li+
f.
Anion which is the weakest reducing agent.
vii.
F-
g.
Metal ion which is an oxidising agent.
Answer the following questions:

Account for the following:

  1. Methylamine in water reacts with ferric chloride to precipitate hydrated ferric oxide.
  2. Diazonium salts of aromatic amines are more stable than those of aliphatic amines.
Explain the properties and uses of methanol and ethanol.