EVS Answer the following questions.

If people drive car instead of using public transport while going to work, more fuel will be burnt, as each car will burn the fuel to release energy and work. However if public transport is used. We need to use fuel, only for one transport vehicle. Hence it will save a lot of fuel if people use the public transport.

Camphor particles present in the tablets escape by getting converted directly to gaseous state. Therefore the tablets of camphor decrease in size day by day.

We use heat energy to cook food, to heat water, to press our clothes, to keep us warm during cold winters in areas where temperature is very low, etc.

Each automobile vehicle needs fuel either in the form of petrol, diesel, or CNG. If all the people use a separate vehicle, the amount of fuel consumed would be much more. If many people start using public transport, fuel consumption would be reduced. A single bus or a train can carry many people and thus it can save lots of fuel.

Tablets of Camphor are in solid state. Camphor has a property to turn into gaseous state directly from a solid state. Therefore, camphor decreases in size gradually. One can also notice the fragrance of camphor as it turns into vapour.