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The various resources are obtained from nature. What are these resources called?
Name the resources which can be used again and again.
Write some examples of inexhaustible and exhaustible natural resources.
Coal, petroleum and natural gas are known as non-renewable sources. Why?
Name the important source from which naphthalene balls are obtained.
Name the product of coal which is thick black liquid having an unpleasant smell.
Why does petrol burn faster than coal?
Name the two products of petroleum which are not used as fuels.
Write the two products of petroleum which are used as fuels.
Natural gas mainly consists of methane in what amount?
When natural gas is compressed by applying pressure, what is it called?
Coal, petroleum and natural gas cannot be prepared in the laboratory. Why?
Write the name of the main fuels which are used for driving vehicles.
Name the petroleum product commonly used for electric generators.
Write the purest form of carbon.
Is it possible to extract petroleum from under the sea?
How is coke obtained from coal?
How can we save petrol/diesel while driving? Explain the statement.
Write the name of a petro-product used in dry cleaning.
Write a name of the substance that is used to repel moths and insects.
Write the use of lubricating oil.
Write the importance of petrochemicals.
Why renewable resources need to be conserved?
Write the advantages of using LPG as fuel.
Why should we use fossil fuels only when absolutely necessary?
State one use each of the following products of petroleum.
(a) Bitumen (b) Petroleum gas
CNG is non-polluting fuel commonly used nowadays. Is it correct?
Write about the extraction of coal.
What do you understand by exhaustible and inexhaustible natural resources? Name two exhaustible and inexhaustible natural resources.
What are petrochemicals? Name two petrochemicals.
What are the products obtained on fraction distillation of coal tar?
How is petroleum formed?