1. What are fossil fuels? Name three fossil fuels.
2. Which material is called 'black gold'.why?
3. What are the advantages of using natural gas for CNG as a fuel?
4. What is the major cause of air pollution? Right few tips for minimising the wastage of petrol/ diesel while driving vehicles.
Please tell the answers....
Answers
Explanation:
(1)Fossil fuels are made from decomposing plants and animals. These fuels are found in the Earth's crust and contain carbon and hydrogen, which can be burned for energy. Coal, oil, and natural gas are examples of fossil fuels. (2) (1) Hydrocarbon (2) Coal (3) petroleum (4) Ether. It is black in colour when crude oil is extracted from the soil. Because of its oil and worth, people call it gold. It's absolutely hard to find. (3)Compressed natural gas (CNG) is one of the cleanest burning transportation fuel on the market today. CNG burns cleaner than petroleum based products because of its lower carbon content. CNG produces the fewest emissions of all other fuels and contains significantly less pollutants than conventional liquid fuels. (4)The major cause of air pollution is due to burning of fossil fuels like coal, petroleum etc. While standing still, switch off the engine of the vehicle. We should not use vehicles for small purposes.
Answer:
1 ) Fossil fuel is a fuel formed by the natural processes such as: decomposition of plants and animals.
Names of fossil fuels are : Coal , Oil and Natural gas.
2) Petroleum is called black gold . Because It is mainly used in the manufacture of various products such as pharmaceuticals, plastics, gasoline, synthetic fabrics, etc so it is called black gold. Petroleum is a naturally occurring element that is in a liquid state. It is either yellow or black in colour.
3) The advantages of using CNG as a fuel are :
1. It does not produce air pollution.
2. It is cheaper .
3. CNG cars run quietly and does not produce sound pollution.
4. CNG does not pose any danger of contamination of ground water since the fuel is non-toxic.
5. They give a lot of heat energy when burnt as compared to other fuels like kerosene, coal, etc.
4 ) Burning of fossil fuels is the major cause of air pollution.
▪Tips for minimising the wastage of petrol/ diesel while driving vehicles are :
• Drive at a constant and moderate speed as far as possible
• Switch off the engine at traffic lights or at a place where you have to wait
• Make sure there is correct tyre pressure
• Ensure regular maintenance of the vehicle.