Indian Institute of Technology Mumbai (IIT-M) 2006 Entrance Exams IIT Entrance Exams IIT Chemistry - Question Paper

Sulphate

(2) the conversion of H2S to S

(3) the conversion of Cl2 to Nacl

(4) the conversion of Zn to ZnsO4



21. for the reaction

3Zn2+ + 2k4[Fe(CN)6]-----> K2Zn3[Fe(CN)6]2 + 6k+,

What will be the equivalent weight of k4[Fe(CN)6],if

The molecular weight of k4[Fe(CN)6] is M ?



(1) M (2) M/2



(3) M/3 (4) M/4



22 The empirical formula of a commercial ion exchange

Resin is C8H7SO3Na. The resin can be used to soften

Water according to the reaction

Ca2+ + 2C8H7SO3Na----->(C8H7SO3-)2Ca + 2Na+.

What would be the maximum uptake of Ca2+ by the

Resin expressed in mole /g resin?

(1) 0.00246 (2) 0.0246



(3) 0.246 (4) 0.0048



23 for the reaction

Ba (OH)2 + 2HCIO3 -----> Ba (CIO3)2 + 2H2O

compute the no of mole of H2O formed when

0.1Mole of Ba (OH)2 is treated with 0.0250 mole

HCIO3

(1) 0.1 (2) 0.125



(3) 0.25 (4) 0.025



24 Ammonia gas is passed into water, yielding a

Solution of density 0.93 g/cm3 and containing

18.6% NH3 by weight. The mass og NH3 per ccof

The solution is



(1) 0.17g/cm3 (2) 0.34g/cm3



(3) 0.51 g/cm3 (4) 0.68 g/cm3



25 the no. of moles of KMn4 that will be needed to

React completely with 1 mole of ferrous

Oxalate in acidic solution is



(1) 3/5 (2) 2/5



(3) 4/5 (4) None of these



26 a mixture of 1.65 x 1021 molecules of X and

1.85 x 1021 molecules of Y weighs 0.688 g.the

Earning:   Approval pending.