Man feels discomfort due to humidity because sweat does not evaporate efficiently in high humidity. Evaporation of sweat cools the body, and when humidity is high, this process is hindered, leading to overheating and discomfort.
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Rice cooks quickly in a pressure cooker because high pressure increases the boiling point of water. This elevated boiling point allows the water to reach higher temperatures, cooking the rice more rapidly. Therefore, the correct answer is [B] High pressure ...
When a piece of ice floating in a glass of water completely melts, the level of water in the glass remains unchanged. This is because the volume of water displaced by the ice is equal to the volume of water ...
Skating on ice shows that on increasing the pressure, the melting point of ice decreases. The pressure exerted by the skater lowers the melting point of the ice underneath the skate blades, causing a thin layer of ice to melt, ...
When two pieces of ice are pressed together, they stick together because the increased pressure lowers the melting point of ice at the point of contact. This allows a thin layer of ice to melt, creating a temporary liquid bridge ...