37528 On performing a borax-bead test with a given inorganic mixture for qualitative analysis, the colour of the bead was found to be emerald green both in oxidising and reducing flame. It indicates the possibility of the presence of

37529 A red solid is insoluble in water. However it becomes soluble if some \(KI\) is added to water. Heating the red solid in a test tube results in liberation of some violet coloured fumes and droplets of a metal appear on the cooler parts of the test tube. The red solid is

37530 An aqueous solution of \(FeS{O_4},A{l_2}{\left( {S{O_4}} \right)_3}\) and chrome alum is heated with excess of \(N{a_2}{O_2}\) and filtered. The materials obtained are

37531 Phosphoric acid \(\left( {{H_3}P{O_4}} \right)\) is tribasic acid and one of its salts is sodium dihydrogen phosphate \(\left( {Na{H_2}P{O_4}} \right)\). What volume of \(1\, M\) \(NaOH\) solution should be added to \(12\, g\) of sodium dihydrogen phosphate (mol. wt. \(120\)) to exactly convert it into trisodium phosphate \(N{a_3}P{O_4}\)  ........\(ml\)

37532 Three separate samples of a solution of a single salt gave these test results : One formed a white precipitate with excess ammonia solution, one formed a white precipitate with dil. \(NaCl\) solution and one formed a black precipitate with \({H_2}S\). The salt could be

37528 On performing a borax-bead test with a given inorganic mixture for qualitative analysis, the colour of the bead was found to be emerald green both in oxidising and reducing flame. It indicates the possibility of the presence of

37529 A red solid is insoluble in water. However it becomes soluble if some \(KI\) is added to water. Heating the red solid in a test tube results in liberation of some violet coloured fumes and droplets of a metal appear on the cooler parts of the test tube. The red solid is

37530 An aqueous solution of \(FeS{O_4},A{l_2}{\left( {S{O_4}} \right)_3}\) and chrome alum is heated with excess of \(N{a_2}{O_2}\) and filtered. The materials obtained are

37531 Phosphoric acid \(\left( {{H_3}P{O_4}} \right)\) is tribasic acid and one of its salts is sodium dihydrogen phosphate \(\left( {Na{H_2}P{O_4}} \right)\). What volume of \(1\, M\) \(NaOH\) solution should be added to \(12\, g\) of sodium dihydrogen phosphate (mol. wt. \(120\)) to exactly convert it into trisodium phosphate \(N{a_3}P{O_4}\)  ........\(ml\)

37532 Three separate samples of a solution of a single salt gave these test results : One formed a white precipitate with excess ammonia solution, one formed a white precipitate with dil. \(NaCl\) solution and one formed a black precipitate with \({H_2}S\). The salt could be

37528 On performing a borax-bead test with a given inorganic mixture for qualitative analysis, the colour of the bead was found to be emerald green both in oxidising and reducing flame. It indicates the possibility of the presence of

37529 A red solid is insoluble in water. However it becomes soluble if some \(KI\) is added to water. Heating the red solid in a test tube results in liberation of some violet coloured fumes and droplets of a metal appear on the cooler parts of the test tube. The red solid is

37530 An aqueous solution of \(FeS{O_4},A{l_2}{\left( {S{O_4}} \right)_3}\) and chrome alum is heated with excess of \(N{a_2}{O_2}\) and filtered. The materials obtained are

37531 Phosphoric acid \(\left( {{H_3}P{O_4}} \right)\) is tribasic acid and one of its salts is sodium dihydrogen phosphate \(\left( {Na{H_2}P{O_4}} \right)\). What volume of \(1\, M\) \(NaOH\) solution should be added to \(12\, g\) of sodium dihydrogen phosphate (mol. wt. \(120\)) to exactly convert it into trisodium phosphate \(N{a_3}P{O_4}\)  ........\(ml\)

37532 Three separate samples of a solution of a single salt gave these test results : One formed a white precipitate with excess ammonia solution, one formed a white precipitate with dil. \(NaCl\) solution and one formed a black precipitate with \({H_2}S\). The salt could be

37528 On performing a borax-bead test with a given inorganic mixture for qualitative analysis, the colour of the bead was found to be emerald green both in oxidising and reducing flame. It indicates the possibility of the presence of

37529 A red solid is insoluble in water. However it becomes soluble if some \(KI\) is added to water. Heating the red solid in a test tube results in liberation of some violet coloured fumes and droplets of a metal appear on the cooler parts of the test tube. The red solid is

37530 An aqueous solution of \(FeS{O_4},A{l_2}{\left( {S{O_4}} \right)_3}\) and chrome alum is heated with excess of \(N{a_2}{O_2}\) and filtered. The materials obtained are

37531 Phosphoric acid \(\left( {{H_3}P{O_4}} \right)\) is tribasic acid and one of its salts is sodium dihydrogen phosphate \(\left( {Na{H_2}P{O_4}} \right)\). What volume of \(1\, M\) \(NaOH\) solution should be added to \(12\, g\) of sodium dihydrogen phosphate (mol. wt. \(120\)) to exactly convert it into trisodium phosphate \(N{a_3}P{O_4}\)  ........\(ml\)

37532 Three separate samples of a solution of a single salt gave these test results : One formed a white precipitate with excess ammonia solution, one formed a white precipitate with dil. \(NaCl\) solution and one formed a black precipitate with \({H_2}S\). The salt could be

37528 On performing a borax-bead test with a given inorganic mixture for qualitative analysis, the colour of the bead was found to be emerald green both in oxidising and reducing flame. It indicates the possibility of the presence of

37529 A red solid is insoluble in water. However it becomes soluble if some \(KI\) is added to water. Heating the red solid in a test tube results in liberation of some violet coloured fumes and droplets of a metal appear on the cooler parts of the test tube. The red solid is

37530 An aqueous solution of \(FeS{O_4},A{l_2}{\left( {S{O_4}} \right)_3}\) and chrome alum is heated with excess of \(N{a_2}{O_2}\) and filtered. The materials obtained are

37531 Phosphoric acid \(\left( {{H_3}P{O_4}} \right)\) is tribasic acid and one of its salts is sodium dihydrogen phosphate \(\left( {Na{H_2}P{O_4}} \right)\). What volume of \(1\, M\) \(NaOH\) solution should be added to \(12\, g\) of sodium dihydrogen phosphate (mol. wt. \(120\)) to exactly convert it into trisodium phosphate \(N{a_3}P{O_4}\)  ........\(ml\)

37532 Three separate samples of a solution of a single salt gave these test results : One formed a white precipitate with excess ammonia solution, one formed a white precipitate with dil. \(NaCl\) solution and one formed a black precipitate with \({H_2}S\). The salt could be