February 4, 2016

IPE Junior Intermediate Chemistry Model Paper - March 2016

Following is Junior Intermediate Chemistry model question paper for IPE Exams in Telangana and Andhra Pradesh to be conducted during March 2016. The duration of the exam is 3 hours and maximum marks are 60. The model paper is as per the new syllabus of Intermediate Boards of respective states.

I. i) Answer ALL questions.
ii) Each carries TWO marks.
iii) All are very short answer type questions. 10 × 2 = 20

1. What is "Boltzman's constant"? Give its value.
2. All Bronsted bases are Lewis bases - Explain.
3. What are intensive and extensive properties?
4. The equilibrium constant for a reaction at 27°C is 10. Calculate Δ G° of the reaction (in Kilo Joules).
5. Explain the significance of Sodium and Potassium in biological fluids.
6. Calculate the mass of Sodium Carbonate required to prepare 250 ml of 0.5 N solution.
7. Why does the solubility of alkaline earth metal hydroxides in water increased down the group?
8. What is "Ozone hole"? Where was it first observed?
9. Name 2 oxides responsible for Green house effect? Name one ill effect of it.
10. Write structural formulae of
a) Neo-pentane b) Tetra-tert. butyl methane


II. i) Answer any SIX questions.
ii) Each carries FOUR marks.
iii) All are short answer type questions. 6 × 4 = 24

11. Deduce a) Graham's law (b) Boyle's law from Kinetic gas equation.
12. Balance the following reaction by ion-electron method.
13. Derive the relation between Kc and Kp for the equilibrium reaction.
2 SO2 (g) + O2 (g) 2 SO3 (g)
14. Explain 2 oxidising and 2 reducing properties of Hydrogen Peroxide.
15. Explain the difference in properties of diamond and graphite on the basis of their structure.
16. What is Borax? Explain the borax bead test with a suitable example.
17. Define hybridisation. Explain the structure of Sulphur hexa fluoride by hybridisation.
18. Calculate bond orders of N2 & O2. Among N2, O2 name the molecule with strongest bond and the molecule with lowest bond dissociation energy.


III. i) Answer any TWO questions.
ii) Each carries EIGHT marks.
iii) All are long answer type questions. 2 × 8 = 16

19. State 2 postulates and 2 limitations of Bohr's atomic model. Explain the different lines in various series of Hydrogen Spectrum with a neat diagram.
20. Define I.E1 and I.E2. Why I.E2 is greater than I.E1? Discuss 4 factors affecting I.E. values of elements.
21. Explain the following with one suitable example each.
a) Wurtz reaction b) Markownikov's rule
c) Ozonolysis of C2H2, C2H4
d) Friedel - Craft's alkylation

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