Question

give reason: 1. water at room temperature is a liquid. 2. A cooler is quite effective on a hot and dry day.

Answer 1

 hi friend i would have answer you afterwards why did yo use points.
your answer is -
1.Water at room temperature is a liquid, because at room temperature, water exits as liquid. Above 100°C, it exits as boiling water or vapor, and below 0°C it exists as ice.
2.this is because the temperature is high and humidity is low.so the rate of evaporation increases and so the water which is inside gets evaporated and
thus the water is cool so the cooler is quite effective on a hot and dry day.
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