FIITJEE Solutions to IIT-JEE-2011

IITJEE is now in Coimbatore.

FIITJEE Solutions to IIT-JEE-2011 will available in the fiitjee website, the link is

http://www.fiitjee.com/fiitjeejava/jsp/iitjeesolution2011/iitjee2011paper1.pdf

1.Extra pure N2 can be obtained by heating

(A) NH3 with CuO (B) NH4NO3

(C) (NH4)2Cr2O7 (D) Ba(N3)2

Sol. (D)

( )

2

Ba N Ba 3N 3 2

∆ → +

2. Dissolving 120 g of urea (mol. wt. 60) in 1000 g of water gave a solution of density 1.15 g/mL. The

molarity of the solution is

(A) 1.78 M (B) 2.00 M

(C) 2.05 M (D) 2.22 M

Sol. (C)

Total mass of solution = 1000 + 120 = 1120 g

Total volume of solution in (L)

1120 3

10

1.15

× =

( )

W 1 120 1.15 10

3

M 2.05 M

4. Geometrical shapes of the complexes formed by the reaction of Ni

2+

with Cl

–

, CN

–

and H2O, respectively,

are

(A) octahedral, tetrahedral and square planar (B) tetrahedral, square planar and octahedral

(C) square planar, tetrahedral and octahedral (D) octahedral, square planar and octahedral

PART - I: CHEMISTRYIITJEE2011-Paper 1-CPM-3

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Sol. (B)