Q5 of 19 Page 143

A non-renewable resource is a natural resource if it is replaced by the natural process at a rate equal to or faster than its rate of consumption by humans.

Read this statement and say whether it is correct or incorrect. If it is incorrect, give the correct statement.

The given statement is incorrect. The correct statement is:

A renewable resource is a natural resource if it is replaced by the natural process at a rate equal to or faster than its rate of consumption by humans.


A non-renewable source cannot be replaced once it is used because its formation takes place a very long time whereas consumption occurs quickly. Therefore the above statement is incorrect which basically says that a non-renewable source can be replaced. On the other hand, the above statement is true for a renewable source. Thus we replaced the non-renewable source with renewable source while correcting the statement.


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Florescent bulbs, copper choke, solar water heater, electric water heater, tungsten bulbs, electronic choke.

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Observe the picture given below and find out what type of energy is produced


i) Identify whether this energy is conventional or non-conventional.


ii) Draw the given diagram and label it with the parts given below:


(battery, battery charger controller, solar incidence, DC load, battery system)


iii) In the given picture, _______energy is transformed into ______energy.