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[QUOTE=mariammal;184220][B]Document Described : [/B]Chemistry Question Paper, Tamil Nadu Question Paper[B]

SCIENCE (THEORY) - PAPER I
SECTION - B
CHEMISTRY[/B]
[B]CLASS  [/B]:X MARKS : 50 TIME : 1 1/4 HRS

[B]V CHOOSE THE CORREXT ANSWER AND WRITE IT AGAINST THE QUESTION NUMBER IN THE ANSWER BOOK [/B]: 10 x 1 = 10
35. The Quantum number which gives the maximum number of electrons in a shell is _________ Quantum number.
a) Principal b) Azimuthal c) Magnetic d) Spin
36. The mass of one mole of Ozone is ____________ gm.
a) 18 b) 16 c) 32 d) 48

[URL]http://dge.tn.gov.in/schoolsyllabus/[/URL]
[URL]http://dge.tn.gov.in/matricsyllabus/blueprint/Qmatscc1.pdf[/URL]

37. Law of multiple proportions was given by ______________
a) Dalton b) Lavoisier c) Berzelius d) Proust
38. The value of H is positive for ____________ reaction.
39. German salve is an alloy of_________
a) Iron b) Aluminum c) copper d) Gold
40. Which one of the following occurs in its native form?
a) Zinc b) Iron c) aluminum d) Gold
41. Sodium Silica is also called as________
a) Blue Glass b) Water Glass c) Watch Glass d)Crystal Glass
42. Butan-2-ol is _________alcohol.
a) a Primary b) a Secondary c) a Tertiary d) an Aromatic
43. Formic acid is present in__________
a) Ants b) Vinegar c) Butter d) None
44. Asbestos is he disease which affects________
a) Luns b) Heart c) Eyes d) None

VI. ANSWER ANY FIVE OF THE FOLLOWING QUESTIONS IN ONE OR TWO SENTENCES
45. State Principle
46. Define Law of Conservation of Mass.
47. State Goy Lucssac's law of combining volumes.
48. Define Law of Mass action.
49. What is Liquation?
50. Define alotropy.
51. What is denatured alcohol?
52. Give any two uses of ethers.
53. Give the types of soil pollutants.

[B]VII. ANSWER ANY FIVE OF THE FOLLOWING QUESTIONS IN BRIEF [/B]: 5 x 3 = 15
54. Write a note on Summerfield’s model of an atom.
55. Give any three difference between an orbit and an orbital.
56. What weight of H2SO4 is present in 250 cm3 of .025 N solution?
57. 6 gm. of Carbon forms two types of oxides each weighing 10 gm and 14gm respectively. Which law does it illustrate? Give reason.
58. Define Rate of reaction and mention its unit.
59. Give any three of Aluminium.
60. Mention the types of ethers with examples.
61. How is Acc acid prepared by Quick Vinegar process?
62. What is decarboxylation? Give an example.

VIII. ANSWER ANY FIVE OF THE FOLLOWING QUESTIONS IN DETAIL WITH NECESSARY.
DIAGRAMS AND EQUATIONS WHEREVER NECESSARY 3 x 5 = 15
63. Explain Oxide formation method of determining equivalent mass of an element with an example.
64. Distinguish between metals and non metals based on their physical properties.
65. Explain the following in the extraction of Iron from its ore
a) Combustion zone b) Fusion Zone and c) Slag formation zone
66. How is Phosphorus extracted by the Modern Electric Thermal process from its ore?
67. Describe the manufacture of ethanol from Molasses.
68. What are effects of Air-Pollution on human beings?[/QUOTE]

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