13. Name any three secondary products obtained after, refining crude oil.
14. Give one example each of renewable and non-renewable resource.
15. Name the alloy used to make surgical instruments.
Section -B
16. Why petroleum products are said to be exhaustible resources?
17. How coal is produced?
18. What is reactivity series of metals? Give the arrangement of metals
in reactivity series.
19. Why do we consider petroleum as black gold?
20. Define malleability and ductility. Give one example for each.
Answers
Answer:
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Answer:
13.An oil refinery or petroleum refinery is an industrial process plant where crude oil is transformed and refined into more useful products such as petroleum naphtha, gasoline, diesel fuel, asphalt base, heating oil, kerosene, liquefied petroleum gas, jet fuel and fuel oils.
14.Renewable resources include biomass energy (such as ethanol), hydropower, geothermal power, wind energy, and solar energy. Biomass refers to organic material from plants or animals
There are four major types of nonrenewable resources: oil, natural gas, coal, and nuclear energy. Oil, natural gas, and coal are collectively called fossil fuels. Fossil fuels were formed within the Earth from dead plants and animals over millions of years—hence the name “fossil” fuels
15..Stainless steel (sometimes referred to as inox steel) is one of the most commonly used metal alloys in the manufacture of surgical implements.
Explanation:
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