A glass tumbler containing hot water is kept | vedclass

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Question

(A) The correct answer is $(a)$. When hot water is placed in a freezer,it loses heat to the surroundings and its temperature decreases until it reache

Vedclass · Accepted Answer

Graph $(a)$

Vedclass · Answer

(A) The correct answer is $(a)$. When hot water is placed in a freezer,it loses heat to the surroundings and its temperature decreases until it reaches $0\,^{\circ}	ext{C}$. At $0\,^{\circ}	ext{C}$,the water begins to undergo a phase change from liquid to solid (ice). During this phase transition,the temperature remains constant at $0\,^{\circ}	ext{C}$ because the heat being removed is used as latent heat of fusion. Once all the water has frozen into ice,the temperature of the ice will continue to decrease further below $0\,^{\circ}	ext{C}$ as it continues to lose heat to the freezer environment. Graph $(a)$ correctly depicts this cooling curve: a steady decrease,a horizontal plateau at $0\,^{\circ}	ext{C}$ during freezing,and a further decrease after the phase change is complete.

Similar Questions

$A$ student heats a beaker containing ice and water. He measures the temperature of the content of the beaker as a function of time. Which of the following graphs would correctly represent the result? Justify your choice.

$(a)$ Define boiling point.
$(b)$ Express the boiling point of water in Celsius as well as Kelvin scale.
$(c)$ $A$ diver is able to cut through water in a swimming pool. Which property of matter does this observation show?

Give reasons for the following:
$(i)$ $A$ liquid generally flows easily.
$(ii)$ Ice at $0^{\circ} C$ appears colder to the mouth than water at $0^{\circ} C$. Why?
$(iii)$ Doctors advise putting strips of wet cloth on the forehead of a person having a high temperature.

$(a)$ Define matter and write its three states.
$(b)$ Explain how these states of matter arise due to variation in the characteristics of the particles.

The following triangle exhibits the interconversion of the three states of matter. Complete the triangle by labeling the arrows marked $A, B, C$ and $D$.

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