Long Answer Questions.
1) Explain about the varieties of coal.
2)
The burning of fossil fuels causes air pollution. Explain.
3)
Write a short note on petroleum.
4)
How is the energy useful to us? Explain.
5) List the steps to conserve the resources.
6) Differentiate between coke and coal.
Answers
Answer:
Petroleum is a naturally occurring liquid found beneath the earth's surface that can be refined into fuel. Petroleum is a fossil fuel, meaning that it has been created by the decomposition of organic matter over millions of years.
Q. 1 Answer:- Coal is classified into four main types, or ranks: anthracite, bituminous, subbituminous, and lignite. ... The rank of a coal deposit is determined by the amount of pressure and heat that acted on the plants over time. Anthracite contains 86%–97% carbon and generally has the highest heating value of all ranks of coal.
Q. 2 Answer:- When fossil fuels are burned, they release nitrogen oxides into the atmosphere, which contribute to the formation of smog and acid rain. ... When fossil fuels are burned, they release nitrogen oxides into the atmosphere, which contribute to the formation of smog and acid rain.
Q. 3 Answer:- Petroleum is a naturally occurring liquid found beneath the earth's surface that can be refined into fuel. Petroleum is used as fuel to power vehicles, heating units, and machines, as well as it can be converted into plastics and other materials.
Q. 4 Answer:- Explanation: Energy is useful because ultimately nothing on Earth would be able to survive without it. ... This usually comes from food, which in the case of plants is grown using the energy from sunlight, and for animals is from the energy stored in the plants they eat.
Q. 5 Answer:- 8 Ways to Conserve Natural Resources at Home
Use less water. Taking shorter showers or turning off the faucet while brushing your teeth can reduce water waste in your home.
Turn off the lights.
Use renewable energy.
Recycle.
Compost.
Choose reusable goods.
Manage your thermostat.
Thrift shop.
Q. 6 Answer:- Coal is a shiny, black fossil fuel that contains impurities, emits smoke when burned, and produces less heat than coke. Coke is a dull, black byproduct of coal that burns hotter and cleaner.