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From the following options given, pick out the correct reason as to why impurities should be removed from mineral ores?
  • a)
    To convert mineral ores into useful materials
  • b)
    To obtain large quantities of mineral ores
  • c)
    To avoid drilling, mining etc
  • d)
    To retain the minerals in its pure state.
Correct answer is option 'A'. Can you explain this answer?
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From the following options given, pick out the correct reason as to wh...
The ores contain a lot of impurities that need to be filtered to obtain useful material. The filtration of these impurities from ores is known as concentration.
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From the following options given, pick out the correct reason as to wh...
**Explanation:**

The correct reason as to why impurities should be removed from mineral ores is option 'A', which states that it is done to convert mineral ores into useful materials. Let's understand why this is the correct reason.

**Conversion of mineral ores into useful materials:**
- Mineral ores are naturally occurring rocks that contain valuable minerals. However, they are usually found in combination with impurities, which are unwanted substances.
- Impurities may include materials such as dirt, rock, clay, and other non-valuable minerals.
- In order to extract the valuable minerals from the ore and convert them into useful materials, it is necessary to remove these impurities.

**Importance of removing impurities:**
- Removal of impurities is an essential step in the processing of mineral ores because impurities can affect the quality and purity of the final product.
- Impurities can reduce the efficiency and effectiveness of various industrial processes that use mineral ores as raw materials.
- Impurities can also impact the physical, chemical, and mechanical properties of the final product, making it less desirable or even unusable for certain applications.

**Methods for removing impurities:**
- Various methods are employed to remove impurities from mineral ores, depending on the nature of the impurities and the properties of the ore.
- Common techniques include crushing and grinding the ore to separate it from impurities, as well as physical separation methods such as gravity separation, magnetic separation, and flotation.
- Chemical processes such as leaching, roasting, and smelting can also be used to remove impurities from specific types of ores.

**Benefits of removing impurities:**
- By removing impurities from mineral ores, we can obtain materials that are more pure and suitable for various industries.
- These purified materials can be used in the production of metals, alloys, ceramics, glass, fertilizers, and many other products.
- The removal of impurities also increases the economic value of the ore, as the purified materials can be sold at higher prices in the market.

In conclusion, the correct reason for removing impurities from mineral ores is to convert them into useful materials. This process is essential to ensure the quality, purity, and economic value of the final products derived from mineral ores.
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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. 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?

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. Concept oriented studies are an important component of mineral surveys and exploration programs.2. The area of mineral exploration can acquire higher capability through concerted action plans. With reference to the passage, which of the following assumptions 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. 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?

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From the following options given, pick out the correct reason as to why impurities should be removed from mineral ores?a)To convert mineral ores into useful materialsb)To obtain large quantities of mineral oresc)To avoid drilling, mining etcd)To retain the minerals in its pure state.Correct answer is option 'A'. Can you explain this answer?
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