Q.1.Sunlight and air are inexhaustible natural resources. Comment.
Q.2.Write two important uses of coke.
Q.3.What steps would you suggest for the judicious use of fossil fuels
Q.4. Explain about coal tar.
Q.5.Where do we get coal and how is it formed
Q.6.Define the term ‘petrochemicals’.
Q.7.Name two products that you obtain from the destructive distillation of coal. What is the residue left in’ this process Give one main use of this residue
Q.8.Can forests help reduce the pollution caused by the burning of fossil fuels How
Q.9.None of the fuels is a clean fuel. Comment.
Q.10.Name some renewable sources of energy.
Q.11.Give some examples of fossil fuels.
Q.12.Name the elements present in coal.
Q.13.Which are the two main techniques of mining
Q.14.List four varieties of coal.
Q.15.Name the process of conversion of wood into coal.
Q.16.Mention the temperature at which destructive distillation is done.
Q. 17.When the crude oil is referred to be ‘sweet’
Q.18.Name the country which is the leading producer of petroleum.
Q.19.Name the gas that occurs over petroleum in reservoirs deep inside the earth.
Q.20.Expand PCRA.
Q.21.Name two fractions of petroleum that are used as fuel.
Q.22.What kind of pollution is caused by the burning of fossil fuels
Q.23.Write the full form of LPG.
Q.24.Which gas is produced when coal is burnt in the air
Q.25.Can we use all our natural resources forever
Q.26.What is the purest form of carbon
Q.27.What is fuel
Q.28.What other source of energy may be used to drive vehicles
Q.29.Name three constituents of petroleum and write their uses also.
Q.30.Can forests help reduce the pollution caused by the burning of fossil fuels How
Q.31.Radhey prefers to go to school by pooling car. On other occasions, he likes to opt for public transport rather than private transport. For short distances, he walks or uses a bicycle.
(a) What are the benefits of carpooling
(b) Which means of transport do you think is best for short distances
(c) How on our end we can reduce the consumption of fossil fuels