Can the process of rusting be called combustion ? Discuss.
Combustion is a chemical process in which a substance reacts with oxygen and gives out energy during the process in the form of either heat or light or both. Rusting is defined as the slow decay of iron metal in presence of air and moisture. This process produce no heat and no light. Also it is very slow process. The process of rusting cannot be called combustion because in this process no heat and light is produced. Due to this reason iron is not considered as combustibIe substance.
In an experiment 4.5 kg of a fuel was completely burnt. The heat produced was measured to be 180,000 kJ. Calculate the calorific value of the fuel.
Abida and Ramesh were doing an experiment in which water was to be heated in a beaker. Abida kept the beaker near the wick in the yellow part of the candle flame. Ramesh kept the beaker in the outermost of the flame. Whose water will get heated in a shorter time?
