A solid cube having certain fixed melting and | vedclass

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(B) In a heating curve,the temperature $	heta$ remains constant during a phase change because the heat supplied is used as latent heat to change the

Vedclass · Accepted Answer

Solid into liquid

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(B) In a heating curve,the temperature $	heta$ remains constant during a phase change because the heat supplied is used as latent heat to change the state of the substance rather than increasing its kinetic energy.$1$. The segment $AB$ represents heating of the solid.$2$. The segment $BC$ is a horizontal line where the temperature is constant,representing the melting process where the solid converts into liquid.$3$. The segment $CD$ represents heating of the liquid.$4$. The segment $DE$ is another horizontal line representing the boiling process where the liquid converts into vapour.$5$. The segment $EF$ represents heating of the vapour.Therefore,the portion $BC$ represents the conversion of solid into liquid.

Column-$I$	Column-$II$
$A$. Conversion of liquid into solid is	$1$. Regelation
$B$. Conversion of liquid into vapour is	$2$. Sublimation
$C$. Conversion of solid into vapour directly is	$3$. Fusion
$D$. Melting of ice caused by pressure is	$4$. Vaporisation

$A$ solid cube having certain fixed melting and boiling points takes heat from some source. The variation of temperature $\theta$ of the cube with the heat supplied $Q$ is shown in the adjoining graph. The portion $BC$ of the graph represents the conversion of

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