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Which of the following fuel gases has the highest calorific value?

$\begin{array}{1 1}\text{Water gas}\\\text{Coal gas}\\\text{Producer gas}\\\text{Semi-water gas}\end{array} $

1 Answer

Answer : Water gas
Water gas is a mixture of CO and $H_2$,both present in equal amounts.It has the highest calorific value,because both CO and $H_2$ burn and evolve heat.
answered Jul 25, 2014 by sreemathi.v