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BOARD OF INTERMEDIATE EDUCATION
SENIOR INTER CHEMISTRY
Time: 3 Hours
SECTION - A
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MODEL PAPER (English Version)
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Max. Marks: 60
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(i) Very Short Answer type questions.
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(ii) Answer ALL questions.
10 × 2 = 20
(iii) Each question carries TWO marks.
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What is an ideal solution?
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What are pseudo first order reaction? Give one example.
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Define the terms 'slag' and 'gangue'.
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Iron becomes passive in conc. HNO3. Why?
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HF is a liquid while HCl is a gas. Explain.
Aqueous Cu +2 ions are blue in colour. Where as aqueous Zn+2 ions are
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colourless. Why?
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What are 'Antibiotics'? Give 2 examples.
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What are biodegradable and non biodegradable detergents? Give one example
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for each.
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What is decarboxylation?
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10. What is Cannizzaro reaction?
SECTION - B
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II. (i) Short Answer type questions.
(ii) Answer any SIX questions.
(iii) Each question carries FOUR marks.
6 × 4 = 24
11. Derive Bragg's equation.
ONLINE-15 MP-3
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NEW SYLLABUS
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12. What is Van't Hoff factor? 0.6 ml of acetic acid having density 1.06 g/ml is
dissolved in 1 lit. of water. The depression of freezing point observed for this
solution is 0.0205 °C. Calculate the Van't Hoff factor.
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13. How are colloids classified on the basis of interaction between dispersed phase
and dispersion medium.
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14. Explain the purification of sulphide ore by froth flotation method.
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15. Write the formulae of the following compounds.
a) Potassium Trioxalatoaluminate (III)
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b) Penta amminechloro cobalt (III) chloride.
c) Diammine Chloronitrito - N - Platinum (II)
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d) Potassium tetra cyanonickelate (II)
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16. What are Hormones? Give one example for each.
(i) Steroid Harmones
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(ii) Polypeptide harmones
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(iii) Aminoacid derivatives
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17. (a) What is Vulcanization of rubber?
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(b) What are 'Thermosetting polymers'? Give two examples.
18. (a) What is "Kolbe's reaction"?
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(b) What is Aspirin? How is it prepared?
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SECTION - C
III. (i) Long Answer type questions.
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(ii) Answer any TWO questions.
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(iii) Each question carries EIGHT marks.
2 × 8 = 16
19. (a) State Faraday's first law of electrolysis?
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A solution of CuSO4 is electrolysed for ten minutes with a current of 1.5
amperes. What is the mass of copper deposited at the cathode?
(b) Explain the terms
(i) Collision frequency (Z)
(ii) Probability factor (P)
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20. (a) Describe the manufacture of H2SO4 by Contact process briefly.
(b) Explain the reaction of the following with water
(ii) XeF4
(i) XeF2
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(iii) XeF6
21. (a) How do you prepare ethylcyanide and ethylisocyanide from a common
alkyl halide?
(b) Explain the mechanism of the SN 2 with one example.
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Writer : A.N.S.Sankara Rao
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