List I | List II | ||
|---|---|---|---|
| A | Pterophyllum | I | Hag fish |
| B | Myxine | II | Saw fish |
| C | Pristis | III | Angel fish |
| D | Exocoetus | IV | Flying fish |
| List-I | List-II | ||
| A | Rhizopus | I | Mushroom |
| B | Ustilago | II | Smut fungus |
| C | Puccinia | III | Bread mould |
| D | Agaricus | IV | Rust fungus |
If 0.01 mol of $\mathrm{P_4O_{10}}$ is removed from 0.1 mol, then the remaining molecules of $\mathrm{P_4O_{10}}$ will be:
An element has two isotopes having atomic masses 10 and 15 u, respectively. If the percent abundance of lighter isotopes is 80%, then the average atomic mass of the element is: