IIT JEE : Chemistry Of Heavier Metals QUESTIONS AND ANSWERS :: part2 : 1 to 5
Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2024 examinations :
1.Which of the following metals exhibits variable valency due to inert pair effect? |
| Iron |
| Lead |
| Mercury |
| Copper. |
2.Which of the following sulphides is black in colour ? |
| MnS |
| CdS |
| CoS |
| ZnS. |
3.The percentage of carbon in steel is in the range |
| 3 - 5% |
| 2 - 3% |
| 1 - 2% |
| 0.1 - 1.5%. |
4.Which of the following salts is heptahydrate? |
| Green vitriol |
| Mohrs salt |
| Blue vitriol |
| Ferric alum. |
5.During extraction of iron the flux used is |
| Silica |
| Calcium silicate |
| Lime stone |
| Coke. |
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