CBSE Class 12 Chemistry Question Paper All India with answers 2017 (2)

CBSE Class 12 Chemistry Question Paper All India with answers 2017 (2). 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.

 CHEMISTRY (Theory)

1.  What is the effect of adding a catalyst on

(a) Activation energy (E_a), and

(b) Gibbs energy (ΔG) of a reaction ?

2. What type of colloid is formed when a solid is dispersed in a liquid ? Give an example.

3. Write the IUPAC name of the following compound :

4. Write the formula of the compound of sulphur which is obtained when conc. HNO₃ oxidises S₈.

5.   , which is an example of vinylic halide ?

6. Using IUPAC norms write the formulae for the following :

(a) Tris(ethane-1,2-diamine)chromium(III) chloride

(b) Potassium tetrahydroxozincate(II)

7. Draw the structures of the following :

(a) H₂S₂O₈

(b) ClF₃

8. Write the name of the cell which is generally used in inverters. Write the reactions taking place at the anode and the cathode of this cell.

9. Calculate the number of unit cells in 8·1 g of aluminium if it crystallizes in a face-centred cubic (f.c.c.) structure. (Atomic mass of Al = 27 g mol^-1)

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