SHORT ANSWER QUESTIONS UNIT I: POLYMERS AND BUILDING MATERIALS
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1 SHORT ANSWER QUESTIONS UNIT I: POLYMERS AND BUILDING MATERIALS 1. Define polymer. Give one example. 2. What is monomer? Give one example. 3. What is polymerization? 4. What is degree of polymerization? Give example. 5. What is functionality? Give example 6. What is tacticity of polymer? 7. What is Isotactic Polymer? 8. What is Atactic polymer? 9. What is Syndiotactic polymer? 10. What is addition polymerization? Give one example 11. What is condensation polymerization? Give one example 12. What is co-polymerization? Give one example 13. Write any two differences between addition and condensation polymerization. 14. What is thermoplastic? Give one example. 15. What is thermosetting? Give one example 16. Write any two differences between thermoplastic and thermosetting. 17. What are the monomers used in Bakelite polymer. 18. Write the structure of Bakelite. 19. Write any two uses of Bakelite. 20. Write the preparation of poly vinyl chloride. 21. Write any two uses of PVC. 22. Write the preparation of PTFE. 23. Write any two uses of PTFE. 24. Write the preparation of PE. 25. Write any two uses of PE. 26. Write any two properties of plastics. 27. What are the additives used in plastics? 28. Draw the diagram of compression moulding. 29. Draw the diagram of injection moulding. 30. Draw the diagram of transfer moulding. 31. Draw the diagram of extrusion moulding. 32. What are the types of cements? 33. What are the raw materials used for the manufacturing of Portland cement. 34. What are the chemical reactions takes place at clinker Zone in rotary kiln. 35. Write any two differences between dry process and wet process.
2 UNIT-II: WATER TECHNOLOGY 1) If the hardness of water sample is 14 degree Clarke, what is the hardness in terms of ppm? 2) What is hardness of water due to? 3) What is degree of hardness? 4) How temporary hardness differs from permanent hardness? 5) What is sedimentation? 6) Write any two harmful affects of silica present in water? 7) Is water obtained from zeolite process is free from all impurities. Justify. 8) What is reverse osmosis? 9) Why magnesium bicarbonate requires double amount of lime for softening? 10) Explain why water containing dissolved calcium and magnesium salt cause hardness. 11) Why is NH 4 Cl and NH 4 OH buffer added during the determination of hardness? 12) What is the indicator used in EDTA method? 13) During sterilization why cloramine is preferred to bleaching powder? 14) What is meant by softening of water? 15) What is break point chlorination? 16) Name any two coagulants. 17) Name the gases dissolved in water which causes corrosion. 18) How is temporary hardness removed? 19) What are the advantages of ion-exchange process? 20) A sample of hardwater contains 14.6 gms of Magnesium bicarbonate and 9.5 gms of MgCl 2 and 13.6 gms of CaSO 4. What is the permanent, temporary and total hardness of the water sample? 21) How is dissolved oxygen removed from boiler feed water? 22) What is meant by dechlorination? 23) Explain the role of chemical coagulants. 24) Explain the role of anion exchange. 25) Why hot lime soda process is advantageous over cold lime soda process? 26) What is desalination? Mention the various methods available for desalination? 27) What are the requisites of drinking water? 28) Write any two differences between permutit, lime-soda and ion exchange process?
3 UNIT-III: SCIENCE OF CORROSION 1. Define corrosion and write on example. 2. What is dry corrosion? 3. What is oxidation corrosion? 4. Write the chemical reactions of oxidation corrosion. 5. What is protective film? Give examples. 6. What is non-protective film? Give examples. 7. What is wet or electrochemical corrosion? 8. Write the equation for formation of rusting of iron. 9. What is protective coating? Give example. 10. What is protective coating? Give example. 11. What is protective coating? Give example. 12. What is non-protective coating? Give example. 13. What is concentration cell? Give example 14. What is stress cell? Give example 15. What is galvanic series? Write importance of it. 16. Write any two differences between electrochemical series and galvanic series. 17. What is Pilling- bedworth rule? 18. Give one example for sacrificial anodic protection method. 19. Give one example for impressed current catholic protection. 20. Write any two differences between sacrificial anodic protection and impressed current catholic protection. 21. Write any two differences between anode coating and cathode coating. 22. What is galvanizing? 23. What is tinning? 24. What is metal cladding? 25. Draw the diagram of sacrificial anode protection. 26. Draw the diagram of impressed current catholic protection.
4 UNIT-IV: FUEL TECHNOLOGY AND LUBRICANTS 1. How the petroleum/crude oil is classified? 2. What is the composition of paraffinic base type crude oil? 3. What is the composition of asphaltic base type crude oil? 4. What is the composition of mixed type base crude oil? 5. What is refining of petroleum and describe the steps involved in it? 6. What is cracking of petroleum and how many types of cracking are there? 7. What is the major difference between thermal cracking and catalytic cracking? 8. What are the synthetic methods for the preparation of petroleum? 9. What is the major difference between thermal and catalytic polymerization? 10. What is the raw material, which has taken in Fischer-Tropsh method? 11. What is the raw material, which has taken in Bergius method? 12. What is reforming and write the difference between thermal and catalytic reforming? 13. Give an example for each reforming methods i. Dehydrogenation, ii. De hydro cyclization, iii. Hydro cracking iv. Isomerization 14. Write the order of knocking tendency of a fuel basing on their structure in case of petrol? 15. What is octane rating/ octane number and describe its importance? 16. What is cetane number and describe its importance? 17. What is the importance of anti knocking agents and give an example for it? 18. Write the order of knocking tendency of a fuel basing on their structure in case of diesel? 19. Define lubrication? 20. Write the functions of good lubricant? 21. What is the mechanism of thick film/ hydrodynamic lubrication? 22. What is the mechanism of thin film/boundary lubrication? 23. What is the mechanism of extreme pressure lubrication? 24. How many types of lubricants are there? 25. What are the limitations and advantages of liquid lubricants? 26. What are the advantages and limitations of solid lubricants? 27. What is viscosity index and explain the effect of temperature on it? 28. What is the importance of viscosity index? 29. Define cloud and pour point? 30. What is the importance of cloud and pour point? 31. Define flash and fire point? 32. What is the importance of flash and fire point? 33. Define aniline point? 34. What is the importance of aniline point? 35. Define mechanical stability? 36. What is the importance of mechanical stability? 37. Define neutralization point/ acid number? 38. What is the importance of acid number?
5 UNIT-V: SOLAR ENERGY, GREEN CHEMISTRY AND NANO TECHNOLOGY 1. What is meant by harnessing of solar energy? 2. What is meant by photo voltaic cells? Give at least two applications. 3. What is solar thermal power plant? Mention its types. 4. Define green house effect. What are green house gases? 5. Mention the consequences of global warming. 6. Describe the depletion of ozone layer. 7. Define green chemistry. 8. List out any six principles of green chemistry. 9. Define ATOM ECONOMY and mention the formula to calculate it. 10. Mention the five key words in principles of green chemistry. 11. Give the list of any four synthesis of green chemistry and mention its advantages. 12. Give any four applications of green chemistry. 13. Write the principle of aqueous phase method and supercritical method. 14. Define nano materials with its dimensions and examples. 15. Write a short note on carbon nano tube(cnt) 16. Give the principle of arc discharge method. 17. Give the principle of laser ablation method. 18. Give the principle of chemical vapor deposition method. 19. Which type of laser is used in laser ablation technique and why? 20. Write the difference between SWNT and MWNT. 21. What are the specific conditions for arc discharge method? 22. What is the necessity of substrate used in CVD and what type of gases substance used in this method. 23. Write few engineering applications of CNT s in fuel cells? 24. Write few engineering applications of CNT s in catalysis? 25. Write few engineering applications of CNT s in medicine? 26. Write about the structure of fullerenes C60? 27. Describe few engineering applications of fullerenes. 28. What are gold nanoparticles and silver nanoparticles. 29. Mention the properties of gold nanoparticles. 30. Give few applications of gold nanoparticles in engineering? 31. Give few applications of gold nanoparticles in bio-medical? 32. Mention the properties of silver nanoparticles. 33. Give few applications of silver nanoparticles in engineering? 34. Give few medical applications of silver nanoparticles?
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Appendix 1 Detailed list of additions and deletions This appendix provides a detailed list of additions and deletions compared with the former (1983) Leaving Certificate Chemistry syllabus. Completely
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for sodium ion (Na + )
3.4 Unit 2 Chemistry 2 Throughout this unit candidates will be expected to write word equations for reactions specified. Higher tier candidates will also be expected to write and balance symbol equations
OCR Chemistry Checklist
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