St. Joseph’s College of Arts & Science (Autonomous) St. Joseph’s College Road, Cuddalore – 607001 ACH301 – ALLIED CHEMISTRY
Time : 3 hrs
Max Marks :75 SECTION – A (20X1=20) Answer ALL Questions
I. Choose the correct answer 1. If the atomic number of an element is Z and mass numbers is A, the number of neutrons present in an atom of that element will be equal to a) A b) Z c) A-Z d) Z-A 2. In a nuclear reaction, the total mass loss is1 amu, then the energy released in this reaction is, a) 931 MeV b) 93.1 MeV c) 93100MeV d) 9310 MeV 3. Geometrical isomerism can be precisely detected by the specific spectroscopy a) Mass b) UV-Visible c) IR d) Raman 4. Cooking time of food is reduced in a pressure cooker because, a) The boiling point of water is lowered b) The boiling point of water is raised c) There is uniform distribution of heat d) The higher pressure softens the food 5. The face of a crystal are inversely proportional to the intercepts of that face on the various axis are called, a) Miller indices b) Muller indices c) Mayer indices d) Mullikan indices 6. The total number of Bravais lattices in a crystal is a) 7 b) 32 c) 230
~1~
d) 14
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7. In a volumetric analysis ,estimation of Calcium is an example for a) Acid-base b) Redox c) Complexometric d) Precipitation 8. The pH range of Methyl Orange is, a) 8.0 to 9.8 b) 4.0 to 5.0
c) 5.6 to 6.0
d) 6.0 to 7.0
9. For the redox couples Zn2+ (aq)| Zn(s) and Cu(s),the reduction potentials are -0.76 v and -0.34 v . a) Zn is reduced and Cu is oxidized b) Zn is oxidized and Cu is reduced c) ) both Zn and Cu are oxidized d) both Zn and Cu are reduced 10. The cell potential is a property of ____________. a) Colligative b) Thermodynamic c) Intensive
Cu2+ (aq)|
d) Extensive
II. Fill up the blanks 11. _____________ + 1H1 → 20 Ne 10 +
4
He 2 .
12. __________ spectroscopy is also called as IR spectroscopy. 13. The Co-ordination number for body centered cubic lattice is______. 14. ________ indicator that can be used titrating between HCl and NaOH. 15. Nernst equation is _________. III. Match the following 16. Splitting of the nucleus
-
17. Absorption maximum 18. Elements of symmetry
-
Nuclear fission
19. Equivalent conductance
-
Axis of symmetry
20. Standard electrode potential
-
~2~
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SECTION – B (10X2=20) Answer any TEN Questions 21. Explain the term
(a)Nucleon
(b)Radioactivity
22. Explain Nuclear breeder reactor. 23. What is the condition for a substance to be IR active? Explain with one example? 24. Define Osmotic Pressure. 25. Explain Electron diffraction. 26. Tabulate the Bravis lattices for seven crystal systems. 27. What are the basic fundamental law of crystallography? 28. Explain the basic principle involved in Voltammetry. 29. Write the cell reaction and calculate E o for the cell Zn,Zn2+(1M): Fe2+(1M),Fe3+: Pt 30. How will you inhibiting the corrosion on the metals? 31. Write and Explain the Nernst equation and their terms 32. What are the types of electrodes are available in electro chemistry? SECTION- C (5X7=35) Answer any FIVE Questions 33. a) What is photonuclear reaction? b) What is design parameter?
~3~
(4) (3)
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34. a) Define cumulative chain fission yield. (4) b) Mention any three industrial applications of Radioactivity? (3) 35. a) What is monochromator? b) Define Bathochromic & hyperchromic shift.
(3) (4)
36. a) Mention the wave length region of IR radiation. (3) b) What are the different types of vibrational modes of triatomic molecules? (4) 37. a) Mention any three characteristics of ionic crystals. (3) b) Differentiate electron diffraction from neutron diffraction. (4) 38. a) What is the use of space lattice in determination of crystal structure by X-ray diffraction? (3) b) How many crystal system in atom? Mention any two. (4) 39. a) Draw a model graph for conductmetric Titration between strong acid & strong base. (3) b) Write ant three advantages of amperometric titrations over methods? (4)
NaOH. 15. Nernst equation is ______. III.Match the following. 16. Splitting of the nucleus -. 17. Absorption maximum -. 18. Elements of symmetry - Nuclear fission.
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