It is difficult to burn a heap of green leaves but dry leaves catch fire easily. Explain.
The green leaves contain some water content with which the ignition temperature of leaves increases and they do not catch fire easily while dry leaves have no water so they catch fire easily.
Make a labelled diagram of candle flame.
Name the unit in which the calorific value of a fuel is expressed.
Which zone of a flame does a goldsmith use for melting gold and silver and why ?
Explain how CO2 is able to control fires.
