CBSE Class-12 Exam 2017 : Foreign Scheme Question Paper, Chemistry

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CBSE Class-12 Exam 2017 : Foreign Scheme

1. What is the formula of a compound in which the element P forms ccp lattice and atoms of Q occupy 2/3rd of tetrahedral voids ?

2. 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. 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

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. (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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