IIT JEE : Qualitative Inorganic Analysis QUESTIONS AND ANSWERS :: part1 : 6 to 10
Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2024 examinations :
6.Which sodium thiosulphate solution is shaken with iodine, thiosulphate is changed to |
| Sulphite ion |
| Sulphate ion |
| Tetrathionate ion |
| Sulphide ion. |
7.Certain inorganic salt, when introduced in flame produces crimson red colour. It indicates the presence of |
| Dichromate ion |
| Thiosulphate ion |
| Strontium ion |
| Calcium ion. |
8.Sodium sulphide react with sodium nitroprusside to form a purple colured compund. During the reaction, the oxidation state of iron |
| Changes from + 2 to + 3 |
| Changes from + 3 to + 2 |
| Changes from + 2 to + 4 |
| Remains unchanged. |
9.The metal whose salts do not give the borax bead test is |
| Cr |
| Ni |
| Pb |
| Mn. |
10.Which of the following is soluble in yellow ammonium sulphide ? |
| CuS |
| CdS |
| SnS |
| PbS. |
More Qualitative Inorganic Analysis QUESTIONS AND ANSWERS available in next pages
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