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

Which of the following fuel gases has the highest calorific value?
  1. Water gas
  2. Coal gas
  3. Producer gas
  4. Semi-water gas

Solution

Water gas is a mixture of $\mathrm{CO}$ and $\mathrm{H}_{2}$, both present in equal amounts. It has the highest calorific value, because both $\mathrm{CO}$ and $\mathrm{H}_{2}$ burn and evolve heat. .

Asked in: JEE-TOPICTESTS-CHEMISTRY

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