Principles Related to Practical Chemistry

The correct match of the group reagents in List-I for precipitating the metal ion given in List-II from solutions, is

1. P → 3; Q → 4; R → 2; S → 1
2. P → 4; Q → 2; R → 3; S → 1
3. P → 3; Q → 4; R → 1; S → 5
4. P → 5; Q → 3; R → 2; S → 4

Match the compounds in List-I with the appropriate observations in List-II and choose the correct option.

1. P → 1; Q → 5; R → 4; S → 2
2. P → 2; Q → 5; R → 1; S → 3
3. P → 5; Q → 2; R → 1; S → 4
4. P → 2; Q → 1; R → 5; S → 3

During sodium nitroprusside test of sulphide ion in an aqueous solution, one of the ligands coordinated to the metal ion is converted to

1. NOS-
2. SCN-
3. SNO-
4. NCS-