CBSE Class 12 Chemistry Question Paper Delhi with answers 2017 (1)

CBSE Class 12 Chemistry Question Paper Delhi with answers 2017 (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.

 CHEMISTRY (Theory)

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

2.   (CH₃CH₂)₂NCH₃  

Write IUPAC name of the following compound :  

     (CH₃CH₂)₂NCH₃

3.  For a reaction R ––→ P, half-life (t_1/2) is observed to be independent of the initial concentration of reactants. What is the order of reaction ?

4.  Write the structure of 1-Bromo-4-chlorobut-2-ene.

5.  Write one similarity between Physisorption and Chemisorption.

6.  Complete the following reactions :

(i) NH₃ + 3Cl₂(excess) →

(ii) XeF₆ + 2H₂O –––––→

                        OR

What happens when

(i) (NH₄)2Cr₂O₇ is heated ?

(ii) H₃PO₃ is heated ?

Write the equations.

7.  Define the following terms :

(i) Colligative properties

(ii) Molality (m)

8. 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

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