GK
GENERAL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Detailed explanation-1: -Fresh water freezes at 32 degrees Fahrenheit i.e 0°C.
Detailed explanation-2: -At temperatures below 32°F (0°C), liquid water freezes; 32°F (0°C) is the freezing point of water. At temperatures above 32°F (0°C), pure water ice melts and changes state from a solid to a liquid (water); 32°F (0°C) is the melting point.
Detailed explanation-3: -Water freezes at 0°C and boils and vapourizes at 100°C only at atmospheric pressure. Change in pressure affects the boiling and melting points of water. For example, when the pressure is decreased, the boiling point of water decreases, meaning it gets boiled at a temperature lower than 100°C.
Detailed explanation-4: -The temperature at which a substance freezes is known as its freezing point. Freezing point is a physical property of matter. The freezing point of pure water is 0°C. Below this temperature, water exists as ice.