JEE Main 2019 — Chemistry solution | Fundamenthol

JEE Main2019Chemistry

Q.

Two blocks of the same metal having same mass and at temperature T₁ and T₂, respectively, are brought in contact with each other and allowed to attain thermal equilibrium at constant pressure. The change in entropy, $Δ$ S, for this process is

A
$2 C_{p} In (\frac{T _{1} + T _{2}}{4 T _{1} T _{2}})$
B
$C_{p} In [\frac{( T _{1} + T _{2} ) ^{2}}{4 T _{1} T _{2}}]$
C
$2 C_{p} In [\frac{T _{1} + T _{2}}{2 T _{1} T _{2}}]$
D
$2 C_{p} In [\frac{( T _{1} + T _{2} ) ^{\frac{1}{2}}}{T _{1} T _{2}}]$

Solution

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