Question
Name different types of Hydrometers with their applications.
| Name of Hydrometer | Application (measuring) |
| 1. Lactometer | Density of milk |
| 2. Saccharometer | Density of sugar in a liquid |
| 3. Alcoholometer | Higher levels of alcohols in Spirits |
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There are 3 plants A, B and C. The flowers of A open their petals in bright light during the day but closes when it gets dark at night. On the other hand, the flowers of plant B open their petals at night but closes during the day when there is bright light. The leaves of plant C fold up and droop when touched with fingers or any other solid object.
Why your doctor advises you to drink plenty of water?