Related InterviewSolutions

• An inorganic salt solution on treatment with HCl gives a white ppt. Which of the following metal ions is possible?A. `Hg_(2)^(2+)`B. `Hg^(2+)`C. `Zn^(2+)`D. `Cd^(2+)`
• An aquous solution of a substance give a white precipitate on tretement with dilute hydrochloric acid, which dissolve on heating. When hydrogen sulphide is passed through the hot acidic solution, a black precipitate is observed.the substance is aA. `Hg_(2)^(2+)` saltB. `Cu^(2+)` saltC. `Ag^(+) ` saltD. `Pb^(2+)` salt
• An aqueous solution `Hg^(2+),Hg_(2)^(2+),Pb^(2+)` and `Cd^(2+)`. The addition of 6N HCl will precipitateA. `Hg_(2)Cl_(2)` onlyB. `PbCl_2` onlyC. `PbCl_2` and `Hg_(2)Cl_(2)`D. `PbCl_(2)` and `HgCl_(2)`
• Sulphuric acid is not for the preparation of original solution in analysing basic radicals becauseA. it is a reducing agentB. it forms insoluble sulphateC. it forms a soluble complexD. it is viscour in nature
• Sometimes yellow turbidity appears while passing `H_2 S` gas even in the absence of II group radicals. This is becauseA. Sulphur is present in the mixture as impurityB. IV group radicals are precipitated as sulphidesC. of the oxidation of `H_(2)S` gas by some acid radicalD. III group radicals are precipitated as hydroxide.
• Nitric acid is generally not used for the preparation of original solution in analysis of basic radicals because itA. is an oxidising agentB. is reducing agentC. forms insoluble nitratesD. forms soluble nitrates.
• `NH_4 CNS` can be used to test one or more out of `Fe^(3+), Co^(2+), Cu^(2+)e`A. `Fe^(3+)` onlyB. `Co^(2+),Cu^(2+)`C. `Fe^(3+),Cu^(2+)`D. All
• When chlorine water is added to an aqueous solution of potassium halide in the presence of chloroform, a violet colour is obtained on adding more of chlorine water, the violet colour disappears, and a colourless solution is obtained. This test confirms the presence of the following in aqueous solutionA. IodideB. BromideC. ChlorideD. Iodide and bromide
• Potassium cyanide is used for separatingA. `Co^(2+)` and `Ni^(2+)`B. `Mn^(2+)` and `Zn^(2+)`C. `Ba^(2+)` and `Ca^(2+)`D. `Cu^(2+)` and `Cd^(2+)`
• Potassium ferrocyanide is used in the detection ofA. `Fe^(2+)` ionB. `Fe^(3+)` ionsC. `Cu^(2+)` ionD. `Cd^(2+)` ion