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In the context of which one of the following are the terms pyrolysis and plasma gasification mentioned?
[2019]
  • a)
    Extraction of earth element
  • b)
    Natural gas extractions technologies
  • c)
    Hydrogen fuel based automobiles
  • d)
    Waste to energy technologie
Correct answer is option 'D'. Can you explain this answer?
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In the context of which one of the following are the terms pyrolysis a...
Pyrolysis and Plasma Gasification in Waste to Energy Technologies

Pyrolysis and plasma gasification are terms mentioned in the context of waste to energy technologies. These technologies are used to convert waste into energy and reduce the amount of waste that ends up in landfills.

Pyrolysis:
Pyrolysis is a process that involves heating waste materials at high temperatures in the absence of oxygen. This results in the breakdown of the waste into gas, liquid, and solid components. The gas can be used as fuel, while the liquid can be used as a source of chemicals. The solid residue can be used as a fuel or as a soil amendment.

Plasma gasification:
Plasma gasification is a process that involves converting waste into a synthetic gas using plasma. Plasma is an ionized gas that is created by applying an electrical field to a gas. The plasma breaks down the waste into its component elements, which can then be used as fuel or chemical feedstocks.

Advantages of Pyrolysis and Plasma Gasification:
1. These technologies can reduce the amount of waste that ends up in landfills, thereby reducing the environmental impact of waste disposal.
2. They can produce energy from waste, reducing the reliance on fossil fuels.
3. They can generate revenue from waste, as the products of these processes can be sold.
4. The solid residue from pyrolysis can be used as a soil amendment, improving soil quality.

Conclusion:
Pyrolysis and plasma gasification are important waste to energy technologies that can help to reduce waste and generate energy. These technologies have several advantages, including reducing the environmental impact of waste disposal and generating revenue from waste.
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In the context of which one of the following are the terms pyrolysis a...
Pyrolysis is a process of combustion in absence of oxygen or the material burnt under controlled atmosphere of oxygen. It is an alternative to incineration. The gas and liquid  thus obtained can be used as fuels.
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Passage - 3With the advancement in the frontiers of science, there is an emerging demand for hi-tech minerals, which will have to be met. This will call for earth scientists anticipating demand and exploring and extracting these minerals with cost effective and environment friendly extraction technologies. Agencies of both ofthe central and state governments will have to play an important promotional role in the exploration of these minerals.The mineral surveys and exploration programmes to be carried out by the central and state agencies will also have to be targeted to take up concept oriented studies integrating geological, geo-physical and geochemical surveys appropriately linked up with laboratory studies involving state ofthe art technologies. Deeper probing of known deposits; intensive and extensive belt wise mineral exploration including covering areas out of the traditional mineral belts and even basement rocks will also have to be undertaken.Concerted action plans need to be drawn up by the concerned organisations to acquire higher capability in all fields of mineral exploration and development. This will call for technology upgradation for field data acquisition, state of the art laboratory back up and development of expertise. Focus areas will include air-borne surveys, ground geophysical surveys, exploratory drilling, marine survey, etc.Q. Consider the following statements:1. Earth scientists will come up with cost effective extraction technologies.2. Promotion of the extraction of hi-tech minerals is required. With reference to the passage, which of the following statements is/are valid?

Passage 3With the advancement in the frontiers of science, there is an emerging demand for hi-tech minerals, which will have to be met. This will call for earth scientists anticipating demand and exploring and extracting these minerals with cost effective and environment friendly extraction technologies. Agencies of both ofthe central and state governments will have to play an important promotional role in the exploration of these minerals.The mineral surveys and exploration programmes to be carried out by the central and state agencies will also have to be targeted to take up concept oriented studies integrating geological, geo-physical and geochemical surveys appropriately linked up with laboratory studies involving state ofthe art technologies. Deeper probing of known deposits; intensive and extensive belt wise mineral exploration including covering areas out of the traditional mineral belts and even basement rocks will also have to be undertaken.Concerted action plans need to be drawn up by the concerned organisations to acquire higher capability in all fields of mineral exploration and development. This will call for technology upgradation for field data acquisition, state of the art laboratory back up and development of expertise. Focus areas will include air-borne surveys, ground geophysical surveys, exploratory drilling, marine survey, etc.Q. Consider the following statements:1. Meeting the emerging demand for hi-tech minerals is an imperative.2. Advancements in science have resulted in emerging demand for hi-tech minerals. With reference to the passage, which of the following statements is/are valid?

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In the context of which one of the following are the terms pyrolysis and plasma gasification mentioned?[2019]a)Extraction of earth elementb)Natural gas extractions technologiesc)Hydrogen fuel based automobilesd)Waste to energy technologieCorrect answer is option 'D'. Can you explain this answer?
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