IIT JEE : Atoms Molecules And Chemical Arithmetic QUESTIONS AND ANSWERS :: part1 : 11 to 15
Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2024 examinations :
11.Which of the following best explains the law of conservation of mass? |
No change in mass is observed when 2.0 g of Mg is heated in vacuum |
1.2 g of carbon when burnt in excess if oxygen consumes only 3.2 g of it to form 4.4 g of carbon dioxide |
12 g of carbon when heated in limited supply of air produces only 20 g of carbon monoxide |
A sample of air in heating does not show any change in mass but volume increases. |
12.Vapour density of a metal chloride is 77. The equivalent mass is 3. Its atomic mass would be |
3 |
6 |
9 |
12 |
13.276 g of silver carbonate on being strongly heated yields a residue weighing |
2.16 g |
3.0 g |
6.2 g |
2.48 g. |
14.Which of the following does not have same number of atoms? |
1 g of oxygen and 1 gm-atom of hydrogen |
1 g of oxygen and 1 gm of ozone |
1 g of hydrogen and 1 gm-atom of hydrogen |
4 g of calcium and 0.1 gm-atom of calcium. |
15.The correctly reported difference of 18.3426 and 8.06 willhave significant figures equal to |
three |
four |
five |
six. |
More Atoms Molecules And Chemical Arithmetic QUESTIONS AND ANSWERS available in next pages
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