1
IIT-JEE 1983
Subjective
+1
-0
Complete and balance the following equation:

HNO3 + HCl $$\to$$ NO + Cl2
2
IIT-JEE 1983
Subjective
+1
-0
Complete and balance the following equations:

Cl2 + OH- $$\to$$ Cl- + ClO-
3
IIT-JEE 1982
Subjective
+4
-0
Hydroxylamine reduces iron (III) according to the equation:

2NH2OH + 4Fe3+ $$\to$$ N2O(g) $$ \uparrow $$ + H2O + 4Fe2+ + 4H+

Iron (II) thus produced is estimated by titration with a standard permanganate solution. The reaction is :

$$MnO_4^-$$ + 5Fe2+ + 8H+ $$\to$$ Mn2+ + 5Fe3+ + 4H2O

A 10 ml sample of hydroxylamine solution was Diluted to 1 litre. 50 ml of this diluted solution was boiled with an excess of iron (III) solution. The resulting solution required 12 ml of 0.02 M KMnO4 solution for complete oxidation of iron (II). Calculate the weight of hydroxylamine in one litre of the original solution. (H = 1, N = 14, O = 16, K =39, Mn = 55, Fe = 56)
4
IIT-JEE 1981
Subjective
+3
-0
Balance the following Equations:

(i) Cu2O + H+ + $$NO_3^ - \to $$ Cu2+ + NO + H2O

(ii) K4[Fe(CN)6] + H2SO4 + H2O $$\to$$ K2SO4 + FeSO4 + (NH4)2SO4 + CO

(iii) C2H5OH + I2 + OH- $$\to$$ CHI3 + $$HCO_3^-$$ + I- + 4H2O
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