Discuss how pH-sensitive smart polymers can be used in glucose sensors.

 Name any two polycarboxylic acids which can behave as pH-responsive polymers.

 Indium and Cadmium ions in 0.1 M HCl give peaks at potentials -0.557 V and -0.597 V by differential pulse polarographic analysis. When a standard solution containing 0.4 ppm of indium is analysed, it gave peak current (in arbitrary units) corresponding to 100.25 at -0.557 V and 43.75 at -0.597 V. A standard solution containing 0.4 ppm of Cd gave i_p 29.52 at -0.557 V and 64.8 at -0.597 V. What is the concentration of indium and cadmium in a sample if the peak current is 190 at -0.557 V and 120 at -0.597 V. 

 What features are required in a conducting polymer?

What is dropping mercury electrode? Give its advantages. 

Discuss the free electron molecular orbital model of conduction in conducting polymers.

 In a coulometric method, 200 mg of nitrobenzene in  of methanol is reduced to phenyl hydroxylamine at a constant potential of -0.95 V (vs. SCE) applied to an Hg electrode. Following reaction takes 30 minutes to complete.
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Calculate the percentage of nitrobenzene if above reduction requires 32mA current. 

What is Coulometer? Explain briefly. Write cathodic and anodic reaction of hydrogen-nitrogen coulometer, where 0.1 M hydrazine sulphate is used as the electrolyte. 

In the kinetics of uncatalysed step growth polymerisation, arrive at the following expression:

Calculate the EMF of the cell. Where,
 and 

Which type of initiators can be used to initiate anionic polymerisation? Give any two examples.

 Consider the following electrochemical cell 
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Consider the following electrochemical cell 

Give one example each for an addition and a condensation polymer.

voltammetry and polarography

 a galvanic cell and an electrolytic cell

reduction and reducing agent

Illustrate different arrangements of polymers according to their tacticity.

oxidation and oxidizing agent

What are pendant groups? Give one example.