IIT JEE : Atoms Molecules And Chemical Arithmetic QUESTIONS AND ANSWERS :: part2 : 16 to 20
Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2024 examinations :
16.27 g of Al will completely react with |
| 3 mol of oxygen |
| 3 g-atoms of oxygen |
| 3 g-equivalents of oxygen |
| 3 atoms of oxygen. |
17.The density of chlorine relative to air is |
| 3 |
| 2.46 |
| 4 |
| unpredicatable. |
18.When 4.0 g of iron is burnt at high temperature to ferric oxide at constant pressure 29.28 kJ Of heat is evolved. The amount of heat evolved for producing one mole of ferric oxide is |
| 819.84 kJ |
| 40.99 kJ |
| 81.98 kJ |
| 409.9 kJ. |
19.33.6 L of water vapour at S.T.P. are condensed to liquid state. The volume occupied by it is approximately |
| 1 L |
| 18 ml |
| 27 L |
| 127 ml. |
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