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Consider the following statements:
1. Graphite is a naturally occurring mineral composed of carbon and is one of the three crystalline forms of carbon.
2. Graphite is a good conductor of electricity but a bad conductor of heat.
3. Graphite has lubricating properties due to its layered structure that allows for easy sliding between the layers.
How many of the statements are correct?
- a)Only one
- b)Only two
- c)All three
- d)None
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
Consider the following statements:1. Graphite is a naturally occurring...
Correct Answer: b) Only two
Explanation:
1. Graphite is a naturally occurring mineral composed of carbon and is one of the three crystalline forms of carbon:
This statement is correct. Graphite is indeed a naturally occurring mineral that is composed of carbon. It is one of the three crystalline forms of carbon, alongside diamond and fullerenes.
2. Graphite is a good conductor of electricity but a bad conductor of heat:
This statement is also correct. Graphite is known for its ability to conduct electricity due to the presence of free electrons that can move easily between the layers of carbon atoms. However, it is a poor conductor of heat because the electrons can move freely in the plane of the layers but not perpendicular to them.
3. Graphite has lubricating properties due to its layered structure that allows for easy sliding between the layers:
This statement is incorrect. Graphite is known for its lubricating properties not because of the easy sliding between its layers, but because of the weak forces between the layers. These weak forces allow the layers to slide over each other easily, reducing friction and providing lubrication.
In conclusion, statements 1 and 2 are correct, while statement 3 is incorrect.
Explanation:
1. Graphite is a naturally occurring mineral composed of carbon and is one of the three crystalline forms of carbon:
This statement is correct. Graphite is indeed a naturally occurring mineral that is composed of carbon. It is one of the three crystalline forms of carbon, alongside diamond and fullerenes.
2. Graphite is a good conductor of electricity but a bad conductor of heat:
This statement is also correct. Graphite is known for its ability to conduct electricity due to the presence of free electrons that can move easily between the layers of carbon atoms. However, it is a poor conductor of heat because the electrons can move freely in the plane of the layers but not perpendicular to them.
3. Graphite has lubricating properties due to its layered structure that allows for easy sliding between the layers:
This statement is incorrect. Graphite is known for its lubricating properties not because of the easy sliding between its layers, but because of the weak forces between the layers. These weak forces allow the layers to slide over each other easily, reducing friction and providing lubrication.
In conclusion, statements 1 and 2 are correct, while statement 3 is incorrect.
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Community Answer
Consider the following statements:1. Graphite is a naturally occurring...
- Graphite About: Graphite is a naturally occurring mineral composed of carbon. It is one of the three crystalline forms of carbon, with the other two being diamond and amorphous carbon (such as charcoal or carbon black). Hence, statement 1 is correct.
- Structure: Graphite has a hexagonal crystal structure in which carbon atoms are arranged in layers or sheets. These layers are weakly bonded together, allowing them to easily slide past each other, giving graphite its lubricating properties. Hence, statement 3 is correct.
- Properties: Graphite is a good conductor of both electricity and heat. It is used in the production of electrodes for batteries and in the electronics industry. Hence, statement 2 is not correct.
- Applications: Graphite is commonly known for its use in pencils. The "lead" in pencils is actually a mixture of graphite and clay. Other applications include crucibles, foundry facings, polishes, arc lamps, batteries, brushes for electric motors, and cores of nuclear reactors.
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Consider the following statements:1. Graphite is a naturally occurring mineral composed of carbon and is one of the three crystalline forms of carbon.2. Graphite is a good conductor of electricity but a bad conductor of heat.3. Graphite has lubricating properties due to its layered structure that allows for easy sliding between the layers.How many of the statements are correct?a)Only oneb)Only twoc)All threed)NoneCorrect answer is option 'B'. Can you explain this answer?
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