Question
Define renewable resources?
Define renewable resources?
Renewable exhaustible resources are those resources that may get exhausted by excessive use but can be re-obtained in nature. Eg- Forests; they might disappear one day if deforestation continues but planting seeds can regenerate them.
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A boy throws a rubber ball vertically upwards. What type of work, positive or negative, is done:
What happens to the buoyant force as more and more volume of a solid object is immersed in a liquid? When does the buoyant force become maximum?
| Ion | Valency(Charges) | Ion | Valency(Charge) |
| Sodium ion | 1+ | Bromide ion | 1- |
| Ammonium ion | 1+ | Hydroxide ion | 1- |
| Calcium ion | 2+ | Sulphate ion | 2- |
| Lead ion | 2+ | Phosphate ion | 3- |