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

CBSE Class 12 Chemistry Question Paper Foreign 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. What is the formula of a compound in which the element P forms ccp lattice and atoms of Q occupy 2/3^rd of tetrahedral voids ?

2.     H₂O, H₂S, H₂Se, H₂Te

 Arrange the following hydrides of Group-16 elements in the increasing order of their thermal stability : 

       H₂O, H₂S, H₂Se, H₂Te

3. What is the role of desorption in the process of catalysis ?

4.     C₆H₅ – CH₂ – CH₂ – OH

 Write the IUPAC name of the following compound : 

      C₆H₅ – CH₂ – CH₂ – OH

5. Among the isomers of pentane (C₅H₁₂), write the one which on photochemical chlorination yields a single monochloride.

6. Do the following conversions in not more than two steps :

(a) Propene to Acetone

(b) Propanoic acid to 2-hydroxypropanoic acid

                               OR

 Write the reaction involved in the following :

(a) Etard reaction

(b) Wolff-Kishner reduction

7. What are colligative properties ? Write the colligative property which is used to find the molecular mass of macromolecules.

8.  [Pt(NH₃)₂Cl₂]

(a) Write the IUPAC name of the isomer of the following complex :

                 [Pt(NH₃)₂Cl₂]

(b) Write the formula for the following : Tetraammineaquachloridocobalt(III) nitrate

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