Equal masses of two liquids A and B contained in vessels of negligible heat capacity are supplied heat at the same rate. The temperature-time graphs for the two liquids are shown. If S represents specific heat and L represents latent heat of liquid, then

Question

Equal masses of two liquids A and B contained in vessels of negligible heat capacity are supplied heat at the same rate. The temperature-time graphs for the two liquids are shown.

If S represents specific heat and L represents latent heat of liquid, then (A) SA >SB, LA< LB (B) SA > SB, LA > LB (C) SA< SB, LA< LB (D) SA< SB, LA > LB

Tardigrade Admin · Accepted Answer

As temperature of A rises faster than temperature of B, therefore specific heat of A is less than that of B, SA< SB. Horizontal portions of graphs represent conversion of liquid into vapours. Therefore, boiling point of A> boiling point of B. Therefore, LA>LB.

Q. Equal masses of two liquids $A$ and $B$ contained in vessels of negligible heat capacity are supplied heat at the same rate. The temperature-time graphs for the two liquids are shown.

If $S$ represents specific heat and $L$ represents latent heat of liquid, then

$S_{A} > S_{B}, L_{A} < L_{B}$

$S_{A} > S_{B}, L_{A} > L_{B}$

$S_{A} < S_{B}, L_{A} < L_{B}$

$S_{A} < S_{B}, L_{A} > L_{B}$

As temperature of $A$ rises faster than temperature of $B$ , therefore specific heat of $A$ is less than that of $B, S_{A} < S_{B}$ .
Horizontal portions of graphs represent conversion of liquid into vapours.
Therefore, boiling point of $A >$ boiling point of $B$ .
Therefore, $L_{A} > L_{B}$ .

Q. Equal masses of two liquids A and B contained in vessels of negligible heat capacity are supplied heat at the same rate. The temperature-time graphs for the two liquids are shown. If S represents specific heat and L represents latent heat of liquid, then

SA​>SB​,LA​<LB​

SA​>SB​,LA​>LB​

SA​<SB​,LA​<LB​

SA​<SB​,LA​>LB​