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प्रश्न
The negative slope of water's fusion curve explains which real-life phenomenon?
विकल्प
Food cooking faster in a pressure cooker
Fog formation in the morning
Ice skating, the blade's pressure melts ice slightly to reduce friction
Snow forming at high altitudes
MCQ
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उत्तर
Ice skating, the blade's pressure melts ice slightly to reduce friction
Explanation:
The narrow blade of an ice skate exerts high pressure on ice, which slightly lowers the melting point of ice and creates a thin liquid layer, this allows the skate to glide smoothly.
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