1
WB JEE 2017
MCQ (Single Correct Answer)
+1
-0.25
Dissolving NaCN in de-ionised water will result in a solution having
A
pH < 7
B
pH = 7
C
pOH = 7
D
pH > 7
2
WB JEE 2017
MCQ (Single Correct Answer)
+1
-0.25
PbCl2 is insoluble in cold water. Addition of HCl increases its solubility due to
A
formation of soluble complex anions like [PbCl3]$$-$$
B
oxidation of Pb(II) to Pb(IV)
C
formation of [Pb(H2O)6]2+
D
formation of polymeric lead complexes
3
WB JEE 2017
MCQ (Single Correct Answer)
+1
-0.25
Of the following compounds, which one of the strongest Bronsted acid in a aqueous solution?
A
HClO3
B
HClO2
C
HOCl
D
HOBr
4
WB JEE 2016
MCQ (Single Correct Answer)
+1
-0.25
The molar solubility (in mol L$$-$$1) of a sparingly soluble salt MX4 is 'S'. The corresponding solubility product is Ksp. S in terms of 'Ksp' is given by the relation
A
$$S = {\left( {{{{K_{sp}}} \over {128}}} \right)^{1/4}}$$
B
$$S = {\left( {{{{K_{sp}}} \over {256}}} \right)^{1/5}}$$
C
$$S = {(256{K_{sp}})^{1/5}}$$
D
$$S = {(128{K_{sp}})^{1/4}}$$
WB JEE Subjects