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A Boys or Junkers calorimeter is used for

  • A.gaseous fuels burnt in a steady stream
  • B.solid fuels burnt in compressed oxygen
  • C.liquid fuels of high viscosity only
  • D.fuels whose ignition temperature is unknown

Answer: A

The gas burns continuously and its heat is transferred to a measured flow of cooling water, so the value follows from the two flow rates and the temperature rise. The condensate is collected, which allows the net value to be worked out as well.

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