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Pick out the wrong unit conversion.

1 Joule = 4.186 calorie.
1 kcal = 3.968 BTU = 0.00116 kWh = 0.00156 hp.
1 ton of TNT (tri-nitro-toluene) = 4.2 GJ (1G = 109).
1 ft.lbf= 0.3238 calorie = 0.1383 kg.m = 1.356 J = 1.356 N.m.

Correct Answer: 1 Joule = 4.186 calorie.

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