A quantity of heat required to change the unit mass of a solid substance, from solid state to liquid state, while the temperature remains constant, is known as

  • [AIIMS 1998]
  • A

    Latent heat

  • B

    Sublimation

  • C

    Hoar frost

  • D

    Latent heat of fusion

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Values for latent heat in Column$-\,I$ and its values are given in Column$-\,II$. Match the followings :

Column $-\,I$ Column $-\,II$
$(a)$ Latent heat of vaporization $L_V$ $(i)$ $22.6\, \times \,{10^5}\,J\,/kg$
$(b)$ Latent heat of fusion $L_f$ $(ii)$ $33.3\, \times \,{10^5}\,J\,/kg$
    $(iii)$ $3.33\, \times \,{10^5}\,J\,/kg$

A thermally insulted vessel contains $150\, g$ of water at $0\,^oC$. Then the air from the vessel is pumped out a adiabatically. A fraction of water turns into ice and the rest evaporates at $0\,^oC$ itself. The mass of evaporated water will be closes to ....... $g$ (Latent heat of vaporization of water $= 2.10 \times10^6\, Jkg^{-1}$ and Laten heat of Fusion of water $ = 3.36 \times10^5\,Jkg^{-1}$ )

  • [JEE MAIN 2019]