At room temperature a student sets up the apparatus to determine the melting point of ice. He takes a beaker half filled with ice and dips a mercury thermometer in it. The correct observation is :
(a) Mercury in the thermometer keeps on falling till it reads —1°C, it remains constant thereafter.
(b) Temperature falls, reaches 0°C, and then, it remains constant even after the whole of the ice has melted.
(c) The temperature falls in the beginning, but starts rising with melting of the ice.
(d) The temperature falls, reaches 0°C and remains constant only as long as both ice and water are present in it.
CBSE Class IX Science VSA (1 Mark)
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d) It is due to latent heat.
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Answer:
It is due to.latent heat
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