St.Joseph School,Ambala City
*Class VllI*
Offline work
Worksheet
Solve the worksheet in revision notebook.
1.Why LPG is a better fuel than coal?
2.Name the petroleum product used for surfacing of roads.
3.Where and when first oil well was drilled?
4.Where is petroleum found in India?
5.What are the products obtained on refining Petroleum?
6.PCRA stands for_____.
7.Name the purest form of carbon.
8.How many substances are found in coal tar?
9.Name the gas which is formed when coal is heated in the absence of air.
10.What are petrochemicals ?where are they used?
11.Why coal and petroleum are called fossil fuels?
12.Petrochemicals are used in manufacturing of ____.
Answers
LPG is considered as a better fuel than coal because it has a higher calorific value, while burning it does not product any smoke.
Bitumen is the petroleum product used for surfacing of roads.
Barely seven years after Edwin L. Drake drilled the world's first oil well in 1859 at Titusville, Pennsylvania, USA, history registered another exploration of the black liquid gold, in the largest continent.
In India, oil is found in Assam, Gujarat, Mumbai High and in the river basins of Godavari and Krishna.
An oil refinery or petroleum refinery is an industrial process plant where crude oil is transformed and refined into useful products such as petroleum naphtha, gasoline, diesel fuel, asphalt base, heating oil, kerosene, liquefied petroleum gas, jet fuel and fuel oils.
The Petroleum Conservation Research Association is an Indian organization that promotes energy efficiency.
Diamond is the purest form of carbon. Different forms of the same chemical substance are called allotropes. Graphite and diamond are two major allotropes of carbon.
Coal tar contains approximately 10,000 chemicals, of which only about 50% have been identified.
Coal gas, gaseous mixture—mainly hydrogen, methane, and carbon monoxide—formed by the destructive distillation (i.e., heating in the absence of air) of bituminous coal and used as a fuel.
Petrochemicals are used to manufacture thousands of different products that people use daily, including plastics, medicines, cosmetics, furniture, appliances, electronics, solar power panels, and wind turbines.
Coal is called a fossil fuel because it was made from plants that were once alive! Since coal comes from plants, and plants get their energy from the sun, the energy in coal also came from the sun. The coal we use today took millions of years to form.
Petrochemicals are used to manufacture thousands of different products that people use daily, including plastics, medicines, cosmetics, furniture, appliances, electronics, solar power panels, and wind turbines.
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