1
JEE Advanced 2014 Paper 2 Offline
MCQ (Single Correct Answer)
+3
-1

An aqueous solution of metal ion M1 reacts separately with reagents Q and R in excess to give tetrahedral and square planar complexes, respectively. An aqueous solution of another metal ion M2 always forms tetrahedral complexes with these reagents. Aqueous solution of M2 on reaction with reagent S gives white precipitate which dissolves in excess of S. The reactions are summarised in the scheme given below:

SCHEME:

JEE Advanced 2014 Paper 2 Offline Chemistry - Salt Analysis Question 15 English Comprehension

M1, Q and R, respectively, are
A
Zn2+, KCN and HCl
B
Ni2+, HCl and KCN
C
Cd2+, KCN and HCl
D
Co2+, HCl and KCN
2
JEE Advanced 2014 Paper 2 Offline
MCQ (Single Correct Answer)
+3
-1

An aqueous solution of metal ion M1 reacts separately with reagents Q and R in excess to give tetrahedral and square planar complexes, respectively. An aqueous solution of another metal ion M2 always forms tetrahedral complexes with these reagents. Aqueous solution of M2 on reaction with reagent S gives white precipitate which dissolves in excess of S. The reactions are summarised in the scheme given below:

SCHEME:

JEE Advanced 2014 Paper 2 Offline Chemistry - Salt Analysis Question 16 English Comprehension

Reagent S is

A
K4[Fe(CN)6]
B
Na2HPO4
C
K2CrO4
D
KOH
3
JEE Advanced 2013 Paper 2 Offline
MCQ (Single Correct Answer)
+3
-1

An aqueous solution of a mixture of two inorganic salts, when treated with dilute HCl, gave a precipitate (P) and a filtrate (Q). The precipitate (P) was found to dissolve in hot water. The filtrate (Q) remained unchanged, when treated with H2S in a dilute mineral acid medium. However, it gave a precipitate (R) with H2S in an ammoniacal medium. The precipitate R gave a coloured solution (S), when treated with H2O2 in an aqueous NaOH medium.

The precipitate P contains

A
Pb2+
B
Hg$$_2^{2 + }$$
C
Ag+
D
Hg2+
4
JEE Advanced 2013 Paper 2 Offline
MCQ (Single Correct Answer)
+3
-1

An aqueous solution of a mixture of two inorganic salts, when treated with dilute HCl, gave a precipitate (P) and a filtrate (Q). The precipitate (P) was found to dissolve in hot water. The filtrate (Q) remained unchanged, when treated with H2S in a dilute mineral acid medium. However, it gave a precipitate (R) with H2S in an ammoniacal medium. The precipitate R gave a coloured solution (S), when treated with H2O2 in an aqueous NaOH medium.

The coloured solution S contains

A
$$F{e_2}{(S{O_4})_3}$$
B
$$CuS{O_4}$$
C
$$ZnS{O_4}$$
D
$$N{a_2}Cr{O_4}$$
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