Discussion
The mismatch between the physical quantity and the dimensional formula in the following is
Answer: B
The mismatch is Torque : \(\mathrm{ML^{2}T^{-1}}\).
Torque is force times distance, so its dimensions are \(\mathrm{MLT^{-2}} \times \mathrm{L} = \mathrm{ML^{2}T^{-2}}\), the same as energy. \(\mathrm{ML^{2}T^{-1}}\) is the dimension of angular momentum.
The others are correct: force \(\mathrm{MLT^{-2}}\); pressure, force per area, \(\mathrm{ML^{-1}T^{-2}}\); heat energy \(\mathrm{ML^{2}T^{-2}}\); thermal conductivity, from \(\frac{Q}{t} = kA\frac{\Delta T}{x}\), \(\mathrm{MLT^{-3}K^{-1}}\).
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