What happens with the temperature during the process of melting?

Temperature increases.

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Temperature remains constant.

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Temperature decreases.

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Temperature suddenly decreases to zero degree celsius.

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Solution

The correct option is B Temperature remains constant.
During the experiment of melting of ice, that the temperature of the system does not change after the melting point is reached, till all the ice melts. This happens even though we continue to supply heat. This heat gets used up in changing the state by overcoming the forces of attraction between the particles.

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Consider the Arrhenius equation given below and mark the correct option.
$k = A . e - \frac{E_{a}}{R T}$
(a) Rate constant increases exponentially with increasing activation energy and decreasing temperature
(b) Rate constant decreases exponentially with increasing activation energy and decreasing temperature
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(d) Rate constant increases exponentially with decreasing activation energy and increasing temperature

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