Chemistry Model Question Paper For Intermediate 1st Year

Intermediate 1st Year Chemistry Model Question Papers

Intermediate Chemistry 1st Year Modal Qusetion Paper

 

Time: 3 Hours
Max.marks:60
 
Section – A
 

Note: Answer all questions                                                      10x2 =20 marks

1. Calculate the R M S speed of nitrogen molecules at 27϶C ?
2. What is disproportionation reaction? Give example.
3. Calculate the pH of 0.05M Ba(OH)Ї solution.
4. Write the biological importance of magnesium and calcium
5. Give the reactions that takes place at anode and cathode in Castner-Kellner process.
6. Graphite is a good conductor of electricity, Why?
7. What is allotropy ? Name two crystalline allotropes of carbon.
8. Define the terms C O D and B O D?
9. What are the harmful effects of acid rains?
10. G ive the structural formulae of the following compounds
(a)2,3- dimethyl butane (b) 2-methyl but-1-ene 


Section – B


Note: Answer any six of the following                                        6x4 =24 marks


11. Write any four postulates of kinetic molecular theory of gases.
12. Balance the following redox equation in acidic medium by ion-electron method
MnO4
+ C2O2O2- -> + Mn2+ + CO2
13. State Hess’s law of constant heat summation. Explain with one example.
14. Derive the relation between K̬ and K̭ for the equilibrium reaction
 N2(g)+ 3H2(g) -> 2NH3(g)
15. Explain electrolytic method of preparation of hydrogen peroxide.
16. Explain the structure of diborane on the basis of VBT
17. Explain (a) position Isomerism and (b) functional group Isomerism with one example for
each of them.
18. Explain (a) Wurtz reaction and (b) Friedel- Craft’s alkylation with one example for each
of them. 


Section – C

Note: Answer any 2 of the follwing                                               2x8 =16 marks


19. What are Quantum Numbers? Explain the significance of the four quantum numbers
associated with an electron.
20. Define first and second ionisation potentials. Why the second ionisation potential of an
element is always greater than it’s first ionisation potential? Explain any four factors
that affect the ionisation potential of an element.
21. (a) Explain sp³d hybridization with one example.
 (b) Explain the molecular orbital theory of oxygen molecule.Calculate it’s bond order
 and explain it’s magnetic property. 


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