1
IIT-JEE 2011 Paper 2 Offline
MCQ (Single Correct Answer)
+3
-0.75
The freezing point (in oC) of a solution containing 0.1 g of K3[Fe(CN)6] (Mol. wt. 329) in 100 g of water (Kf = 1.86 K kg mol-1) is
A
-2.3 $$\times$$ 10-2
B
-5.7 $$\times$$ 10-2
C
-5.7 $$\times$$ 10-3
D
-1.2 $$\times$$ 10-2
2
IIT-JEE 2011 Paper 2 Offline
MCQ (Single Correct Answer)
+3
-0.75
Consider the following cell reaction:
2Fe(s) + O2(g) + 4H+(aq) $$\to$$ 2Fe2+ (aq) + 2H2O (l); Eo = 1.67 V
At [Fe2+] = 10-3 M, P(O2) = 0.1 atm and pH = 3, the cell potential at 25oC is
A
1.47 V
B
1.77 V
C
1.87 V
D
1.57 V
3
IIT-JEE 2011 Paper 2 Offline
MCQ (More than One Correct Answer)
+3
-0.75
For the first order reaction
2N2O5 (g) $$\to$$ 4NO2 (g) + O2 (g)
A
the concentration of the reactant decreases exponentially with time
B
the half-life of the reaction decreases with increasing temperature
C
the half-life of the reaction depends on the initial concentration of the reactant
D
the reaction proceeds to 99.6% completion in eight half-life duration
4
IIT-JEE 2011 Paper 2 Offline
MCQ (Single Correct Answer)
+1
-0.25
Oxidation states of the metal in the minerals haematite and magnetite, respectively are
A
II, III in haematite and III in magnetite
B
II, III in haematite and II in magnetite
C
II in haematite and II, III in magnetite
D
III in haematite and II, III in magnetite
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