Indian Institute of Technology Mumbai (IIT-M) 2006 Entrance Exams IIT Entrance Exams IIT Chemistry - Question Paper
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Then molar ratio of NaHCO3 to Na2CO3 is
(1) 1/2 (2) 2/3
(3) 3/4 (4) 1/3
33 when 400 g of a 20% solution by weight was cooled
50 g of solute precipitated the percentage
Concentration of remaining solution?
(1) 8.57% (2) 15%
(3) 12.25% (4) 9.5%
34 12.53 ml of 0.051 M SeO2 reacted with 25.52 ml of
0.1 M CrSO4 solution In the reaction Cr2+ was
Oxidised to Cr3+The Oxidation state at which
Selenium was converted is
(1) three (2) +2
(3) one (4) 0
35 the quantity of 3M HNO3 needed to Oxidised eight g
Fe2+ is
(HNO3 + Fe2+ -----> Fe3+ + NO + H2O)
(1) 8ml (2) 16ml
(3) 32ml (4) 64ml
36 the stoichiometric coefficient of S in the subsequent
Reaction
H2S + HNO3 -----> NO + S+ H2O
(1) one (2) 2
(3) three (4) 4
37 0.92 gm of Ag2CO3 heated strongly After
Heating the amount of residue is
(1) 0.36 gm (2) 0.39 gm
(3) 0.77 gm (4) 0.72 gm
38 200 ml of 0.01 M KMnO4 Oxidise 20 ml of
H2O2 sample in acidic medium the quantity
Earning: Approval pending. |