Question

11. Name any three major problems of coal mining industry.
12. List any two ways by which one can conserve coal.
13. Where is petroleum obtained from?
14. Name the two most important areas of petroleum oil.
75. Name a few important oil fields of North East India.
16. Name a few important oil fields of West India.
17. Why is Mumbai High considered to be major oil bearing site in India?
18. How many oil refineries do we have in India?
19. Name a few problems of natural gas.
20. Name the different types of electricity.
21. What are the main causes for the low production of hydel powers?
22. Enumerate the factors needed for installing a hydroelectric project.
23. How important is the hydel power projects for India?enumerate the factors needed for installing a hydroelectric project ​

Answer 1

Answer:

11- Machinery trying to mine the coal may not be able to reach the displaced seam, if the displacement is too large. Coal mines use a combination of boreholes and higvh-resolution seismic reflection data to identify the larger faults and avoid the most faulted areas at the mine planning stage.

12- 1. Conserve power in your home by replacing old light bulbs with new forms of energy-efficient bulbs.

2. Invest in energy-efficient home appliances.

13- Petroleum are all fossil fuels that formed under similar conditions. Today, petroleum is found in vast underground reservoirs where ancient seas were located. Petroleum reservoirs can be found beneath land or the ocean floor. Their crude oil is extracted with giant drilling machines.

14- The Brahamputra valley and The Gujarat coast are the two most important areas where petroleum oil found.

75- Assam is considered to be one of the oldest oil producing states in India. The major oil fields are Digboi, Naharkatiya, and Hugrijan.

16- Oil Fields of Western India:

Ankleshwar: The first major oil-find came in 1958 with the discovery of Ankleshwar field located about 80 km south of Vadodara and nearly 160 km south of Khambhat.

Khambhat or Lunej field.

Ahmedabad and Kalol field.

17- Mumbai high is one of the most famous oil reserves in the country and the reason behind it is the discovery by ONGC of major oil reserves in the region. Every year India extracts tonnes of oil from the region.

18- India has 18 public sector refineries and five refineries in the private sector/or as a joint venture, the largest refineries being RIL Jamnagar (Gujarat), NEL Vadinar (Gujarat) and IOC Panipat (Haryana).

19-Environmental Impacts of Natural Gas

Global warming emissions. Natural gas is a fossil fuel, though the global warming emissions from its combustion are much lower than those from coal or oil. ...

Natural Gas 101. How Natural Gas Is Formed. ...

Air pollution. ...

Land use and wildlife. ...

Water use and pollution. ...

Earthquakes.

20- There are two types of Electricity, Static Electricity and Current Electricity. Static Electricity is made by rubbing together two or more objects and making friction while Current electricity is the flow of electric charge across an electrical field.

21- Where there are falls, such falls generally occur in rugged mountainous regions or glaciated areas, whether morainal or ice-scoured; where the volume of water in the stream is more or less uniform as floods are likely to injure the plant, while the low water flow may cause their stoppage due to insufficiency.

22-

Enumerate the factors needed for installing a hydroelectric project.A number of factors-geographic and economic influence construction of hydro-electric power plants:

(i) Precipitation.

(ii) Uniform Supply of Water, either from streams, rivers or Lakes.

(iii) Topography.

(iv) Absence of or Inadequate Coal or Oil Resources.

(v) Demand.

(vi) Accessibility.

(vii) Cheap Raw Materials

23- In India hydro power plants has great importance, because water is the fuel for hydro power plants i.e. potential energy of water is the fuel. In India we have many natural source of water i.e. water falling from mountain has more potential energy which can be converted into large amount of electricity.

Uniform and adequate supply of water to enable a hydro-electric plant to work at full capacity.

The presence of lakes, which act as natural regulators, is of great help in maintaining regular and constant flow of water.

Answer 2

11) Major problems in the coal mining industry:

• Earthquakes landslides and poisonous gases can result in the deaths of coal mine workers.
• Huge machines are difficult to displace.
• Environmental degradation due to the removal of trees.
• The use of explosives could cause earthquakes damaging the surrounding constructions.

12) Two ways by which one can conserve coal

• Use energy-efficient appliances in the home which in turn save the amount of coal required for electricity.
• Use of solar power.

13)

• Petroleum is all fossil fuels that formed under the earth's surface.
• Petroleum is found in underground reservoirs where ancient seas were located.
• UAE and other middle east countries have fossil fuel reservoirs.
• It is also found under the sea.
• It is harvested by using drilling machines.

14)

• Brahmaputra valley
• Gujarat coast

75)

Assam is considered as one of the oldest oil-producing states in India. The oil fields named Digboi, Naharkatiya, and Hugrijan are located in Assam.

16) Oil Fields of Western India:

• Ankleshwar (It is located south of Vadodara. )

• Ahmedabad and Kalol field.

• Khambhat or Lunej field.

17) Mumbai High is considered to be a major oil-bearing site in India Mumbai because,

• It is the major discovery by ONGC of huge oil reserves in the region.
• Every year India extracts tonnes of oil from this region.

18) Number of oil refineries do we have in India

• India has 18 public sector refineries.
• 5 refineries in the private sector as a joint venture.

19) Environmental Impacts of Natural Gas

• Natural gas is a fossil fuel, though the global warming emissions from its combustion are much lower than those from coal or oil.
• Air pollution.
• Leak in the pipelines can cause a great fire.

20)There are two types of Electricity

• Static Electricity:-Static Electricity is made by rubbing together two or more objects and making friction
• Current Electricity:-Current electricity is the flow of electric charge across an electrical field.

21)Main causes for the low production of hydel powers

• Mountainous regions or glaciated areas where it becomes difficult to construct dams and store huge water.
• Uniform floods are likely to injure the plant
• Low water flow may cause their stoppage due to insufficiency.

22)The factors needed for installing a hydroelectric project:

• Accessibility
• Topography
• Precipitation.
• Uniform Supply of Water, either from streams, rivers or Lakes

23)

• In India hydropower plants has great importance, because water is essential to generating energy for hydropower plants.
• besides this hydel power projects fulfill water demand for agriculture and other activities.
• Hydel power plants are an important source of drinking water in cities.

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