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The underlined words in the following sentences have been jumbled up. Write them in their correct form.
(a) Loca is obtained from mines.
(b) Umpetlore is a fossil fuel.
(c) Renrfvie is a place where various fractions of petroleum are separated.
(d) Keen rose is a fuel used in jet crafts.
(e) Nutsoilh is an example of inexhaustible natural resources.
(a) Coal is obtained from mines.
(b) Petroleum is a fossil fuel.
(c) Refinery is a place where various fractions of petroleum are separated.
(d) Kerosene is a fuel used in jet crafts.
(e) Sunlight is an example of inexhaustible natural resources.
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- Why is petroleum called a fossil fuel?
- Which of the following is not a fossil fuel?(a) LPG (b) natural gas (c) biogas (d) CNG
- Tick True/False against the following statements.(a) Fossil fuels can be made in the laboratory.(b) CNG is more polluting fuel than petrol.(c) Coke is an almost pure form of carbon.(d) Coal tar is a mixture of various substances.(e) Kerosene is not a fossil fuel.
- Some words related with silk are jumbled up. Write them in their correct form.(a) TURECULRISE(b) WILSMORK(c) BELMURRY(d) RINGLEE
- The fossil fuel whose known reserves in the earth are expected to last for the minimum period is:(a) coal (b) uranium (c) petroleum (d) natural gas
- Various materials which are obtained from nature are called natural resources. Which of the following is not a natural resource?MineralsWaterSoilPlastic
- A list of jumbled words is given here. Write the correct form of each word.(a) WASHFERRET(b) CHARREGE(c) QUIFERA(d) WOSN
- State whether the following statements are true or false:(a) Coke is almost pure from carbon.(b) Coal tar is a mixture of various substances.(c) Kerosene is not a fossil fuel.(d) CNG is more polluting than petrol.(e) Fossil fuels can be made in the laboratory.
- Which one of the following is not a fossil fuel?petrolcokecharcoalcoa
- Name the fuel which is used in jet aircraft engines.
- Why Kerosene-based fuel is used in the engines of jet aeroplanes?
- Where are the natural gas found? Why is natural gas called a clean fuel?
- (a) What is meant by inexhaustible natural resources? Name two inexhaustible natural resources.(b)What is meant by exhaustible natural resources? Name any two exhaustible natural resources.
- (a) Write the chemical equation of the reaction which takes place during the burning of ethanol in air.(b) Why is ethanol used as a fuel?(c) State two used of ethanol (other than as a fuel).
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