List the disadvantages of using fossil fuels.

1.	List the disadvantages of using fossil fuels.
Answer» (i) Fossil fuels are formed from carbon and biomass which contains hydrogen, carbon, nitrogen and sulphur. (ii) When these are burnt, the products are oxides of carbon, water, oxides of nitrogen and oxides of sulphur. (iii) Oxides of nitrogen, oxides of sulphur and carbon monoxide are poisonous at high concentration. They may lead to acid rain. (iv) Carbon dioxide is a greenhouse gas. When its concentration in the atmosphere increases continuously, leads to intence global warming.

Answer»

(i) Fossil fuels are formed from carbon and biomass which contains hydrogen, carbon, nitrogen and sulphur.

(ii) When these are burnt, the products are oxides of carbon, water, oxides of nitrogen and oxides of sulphur.

(iii) Oxides of nitrogen, oxides of sulphur and carbon monoxide are poisonous at high concentration. They may lead to acid rain.

(iv) Carbon dioxide is a greenhouse gas. When its concentration in the atmosphere increases continuously, leads to intence global warming.

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List the disadvantages of using fossil fuels.

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