CBSE Class 12 Chemistry Question Paper Delhi with answers 2017 Set 03

CBSE Class 12 Chemistry Question Paper Delhi with answers 2017 (3). 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 catalyst on :

(i) Gibbs energy (ΔG) and

(ii) activation energy of a reaction ?

2.  Write one similarity between Physisorption and Chemisorption

3.  Write the formula of an oxo-anion of Manganese (Mn) in which it shows the oxidation state equal to its group number.

4.  Write the structure of 3-Bromo-2-methylprop-1-ene.

5.  (CH₃)₂N – CH₂CH₃  

Write IUPAC name of the following compound :  

     (CH₃)₂N – CH₂CH₃ 

6.  Write the reactions involved in the following reactions :

(i) Clemmensen reduction

(ii) Cannizzaro reaction

7.  Draw the structures of the following :

(i) H₄P₂O₇

(ii) XeOF₄

8.  Define the following terms :

(i) Abnormal molar mass

(ii) van’t Hoff factor (i)

9.  Calculate the degree of dissociation (α) of acetic acid if its molar conductivity (∧m) is 39.05 S cm²mol^–1.

    Given λo(H⁺) = 349.6 S cm²mol^–1. and λo(CH₃COO–) = 40.9 S cm²mol^–1.

10.  Complete the following chemical equations :

(i) F₂ + 2Cl– ––––→

(ii) 2XeF₂ + _2H2O ––––→

              OR

What happens when

(i) HCl is added to MnO₂ ?

(ii) PCl₅ is heated ?

Write the equations involved.

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