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IIT-JEE-Chemistry-Paper 2-2007

Paper II

______________________________________________________________________

20.    Match the reactions in Column I with nature of the reactions/type of the products in Column II.

Column I

Column II

(A)

O2- → O2 + O22-

(p)

redox reaction.

(B)

CrO42- + H+ →

(q)

one of the products has trigonal planar structure

(C)

MnO4- + NO2- + H+ →

(r)

dimeric bridged tetrahedral metal ion

(D)

NO3- + H2SO4 + Fe2+ →

(s)

disproportionation

21.    Match the compounds/ions in Column I with their properties/reactions in Column II.

Column I

Column II

(A)

C6H6CHO

(p)

Gives precipitate with 2, 4-dinitrophenylhydrazine

(B)

CH3C≡CH

(q)

Gives precipitate with AgNO3

(C)

CN-

(r)

Is a nucleophile

(D)

I-

(s)

Is involved in cyanohydrins formation

22.    Match the crystal system/unit cells mentioned in Column I with their characteristic features mentioned in Column II.

Column I

Column II

(A)

Simple cubic and face-centred cubic

(p)

Have these cell parameters 
a = b = c and a = b = g

(B)

Cubic and rhombohedral

(q)

Are two crystal systems

(C)

Cubic and tetragonal

(r)

Have only two crystallographic angles of 90o

(D)

Hexagonal and monoclinic

(s)

Belong to same crystal system

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