IGNOU MCH 21 SOLVED ASSIGNMENT

Ques 1.

What are pendant groups? Give one example.

Ques 2.

Illustrate different arrangements of polymers according to their tacticity.

Ques 3.

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

Ques 4.

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

Ques 5.

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

Ques 6.

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

Ques 7.

 What features are required in a conducting polymer?

Ques 8.

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

Ques 9.

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

Ques 10.

Discuss the mechanism of biological degradation of polymers by microorganisms.

Ques 11.

Give the products formed by aerobic and anaerobic biodegradation of biodegradable polymers.

Ques 12.

Name four types of hydrogels based on four their composition.

Ques 13.

What is artificial kidney?

Ques 14.

For cross linking by free radical polymerisation in hydrogels, name any two initiators, a cross linking agent and any two monomers.

Ques 15.

List any four characteristics of artificial blood.

Ques 16.

What is PBT? Give its use.

Ques 17.

Give the important applications of glass. What are the various oxides which plays an important role in firing of traditional ceramics?

Ques 18.

Give the classification of composites. Explain any one of the physical methods of preparation of nanomaterials.

Ques 19.

Explain the magnetic properties of nanomaterials.

Ques 20.

Explain briefly the common methods for thin film deposition.

Ques 21.

What is the difference between Langmuir-Schaefer (LS) and Langmuir-Blodgett (LB) films?

Ques 22.

What are liquid crystals? Give the structural requirements of liquid crystals. 

Ques 23.

Draw comparative amongst of molecules in solids, liquids and liquid crystals.

Ques 24.

What is hydrophobic lipophilic balance? Briefly explain.

Ques 25.

What are main chain liquid crystal polymers? Explain with the help of suitable examples.

Ques 26.

(i) Give the applications of LCPs in electronics.

(ii) What are micelles? Briefly explain using a diagram.

Ques 27.

What is CMC? List the factors affecting it.

Ques 28.

What are pendant groups? Give one example.

Ques 29.

Illustrate different arrangements of polymers according to their tacticity.

Ques 30.

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

Ques 31.

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

Ques 32.

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

Ques 33.

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

Ques 34.

 What features are required in a conducting polymer?

Ques 35.

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

Ques 36.

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

Ques 37.

Discuss the mechanism of biological degradation of polymers by microorganisms.

Ques 38.

Give the products formed by aerobic and anaerobic biodegradation of biodegradable polymers.

Ques 39.

Name four types of hydrogels based on four their composition.

Ques 40.

What is artificial kidney?

Ques 41.

For cross linking by free radical polymerisation in hydrogels, name any two initiators, a cross linking agent and any two monomers.

Ques 42.

List any four characteristics of artificial blood.

Ques 43.

What is PBT? Give its use.

Ques 44.

Give the important applications of glass. What are the various oxides which plays an important role in firing of traditional ceramics?

Ques 45.

Give the classification of composites. Explain any one of the physical methods of preparation of nanomaterials.

Ques 46.

Explain the magnetic properties of nanomaterials.

Ques 47.

Explain briefly the common methods for thin film deposition.

Ques 48.

What is the difference between Langmuir-Schaefer (LS) and Langmuir-Blodgett (LB) films?

Ques 49.

What are liquid crystals? Give the structural requirements of liquid crystals. 

Ques 50.

Draw comparative amongst of molecules in solids, liquids and liquid crystals.

Ques 51.

What is hydrophobic lipophilic balance? Briefly explain.

Ques 52.

What are main chain liquid crystal polymers? Explain with the help of suitable examples.

Ques 53.

(i) Give the applications of LCPs in electronics.

(ii) What are micelles? Briefly explain using a diagram.

Ques 54.

What is CMC? List the factors affecting it.

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