For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm³) while the C.V. is same on weight basis (i.e., kcal/kg)?

A. Grey cast iron B. White cast iron C. Malleable iron D. Graphite

A. 1.5 B. 3 C. 5 D. 7

A. Pulverised fuel B. Travelling grate stoker firing C. Circulating fluidised bed D. Fluidised bed

A. Induced stresses B. Density C. Elastic properties D. Thermal properties