IIT JEE : Chemistry Of Lighter Metals QUESTIONS AND ANSWERS :: part1 : 26 to 30
Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2024 examinations :
26.At high temperature nitrogen combines with calcium carbide to give |
| Calcium cyanide |
| Calcium cynamide |
| Calcium nitride |
| Calcium carbonate. |
27.Which of the following is an ore of potassium? |
| Carnallite |
| Cryolite |
| Bauxite |
| Dolomite. |
28.Potassium is stored under |
| Water |
| Alcohol |
| Ammonia |
| Kerosene. |
29.The approximate percentage of gypsum in Portland cement is |
| 10-15% |
| 20-30% |
| 30-40% |
| 2-3%. |
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