CBSE Class 12 Chemistry Question Paper SA 1 2012 (1)

CBSE Class 12 Chemistry Question Paper SA 1 2012 (1). Students can download the last year question papers using the link below.Free download of examination question papers with solutions.Last 10 year question papers should be practised to get better marks in examinations.

1. How many tetrahedral voids are per atom in a unit cell ?

2. Why does not frenkel defect change the density of AgCl crystals ?

3. Will elevation in boiling point temperature be same for 0.1 M Nacl and 0.1 M sucrose solution ?

4. What is electrochemical equivalent ?

5. Write the rate law & order for the following reaction :

       AB₂ + C₂ → AB₂C + C (slow)

       AB₂ + C → AB₂C (fast)

6. What will happen if colloidal solution is subjected to prolong dialysis ?

7. Why do blisters generally appear when molten copper is allowed to cool in Bessemer converter?

8. PCl₅ is ionic in the solid state. Why ?

9. How are n-type & p-type semiconductors formed ? Give one example in each case.

10. What is the relation in the osmotic pressue at 273 K. When 10g of glucose (π₁), 10g of urea (π₂) & 10 g of sucrose (π₃) are dissolved in 250 mL of water ?

11. What is Raoult's law ? Why does a solution of ethanol and cyclohexane show positive deviations from ideal behaviour ?

12. How many moles of copper will be deposited from a solution of CuSO₄ by passing 24125C of electricity?

13. Why does alkaline medium inhibit the rusting of iron ?

14. Is it possible for a chemical reaction to have zero activation energy ?

Please click the link below to download pdf file of CBSE Class 12 Chemistry Question Paper SA 1 2012 (1).