Answer:
Weight
\[=mg=\left( V\rho \right)g\] where \[\rho \] is density. Now, V and g are
constants. Therefore, weight\[\propto \rho \]
In summer, temperature rises. Therefore, due to
thermal expansion, density \[\rho \] decreases, and hence, the weight
decreases. Thus, 5 litres of benzene will weigh more in winter than in summer.
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