A glass tumbler containing hot water is kept | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

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

$(a)$ "Evaporation causes cooling." Explain the reason for this effect.
$(b)$ Explain two examples from our daily life where we feel the effect of cooling due to evaporation.

Rate of diffusion is faster in gases. Why?

$(a)$ Arrange the following in the increasing order of $(i)$ Force of attraction $(ii)$ Intermolecular space: Iron nail,Kerosene,and Oxygen gas. $(b)$ Define the following terms: $(i)$ Rigidity $(ii)$ Compressibility $(iii)$ Diffusion.

Name the state of matter in which:
$(a)$ Layers of particles can slip and slide over one another easily.
$(b)$ Particles just move around randomly because of very weak force of attraction.

State whether the following statement is true or false:
$0^{\circ} C = -273 \ K$

Vedclass Test Series

Exam Paper Generator

Online Exam Module