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With reference to Graphene, consider the following statements:
It is a three-dimensional carbon allotrope.
It is made up of very tightly bonded carbon atoms organized into a hexagonal lattice.
It has very high electrical conductivity.
Which of the statements given above is/are correct?
- a)1 and 2 only
- b)2 and 3 only
- c)1 and 3 only
- d)1, 2 and 3
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
With reference to Graphene, consider the following statements: It i...
- Graphene is a two-dimensional carbon allotrope. It is composed of carbon atoms positioned in a hexagonal design, which can be said to resemble a chicken wire. Graphene is the basic building block for other graphitic materials; it also represents a conceptually new class of materials that are only one atom thick, so-called two-dimensional (2D) materials (they are called 2D because they extend in only two dimensions: length and width; as the material is only one atom thick Hence statement 1 is not correct and statement 2 is correct.
- It is the building block for other graphitic materials (since a typical carbon atom has a diameter of about 0.33 nanometers, there are about 3 million layers of graphene in 1 mm of graphite).
- Units of graphene are known as nanographene; these are tailored to specific functions and as such their fabrication process is more complicated than that of generic graphene. Nanographene is made by selectively removing hydrogen atoms from organic molecules of carbon and hydrogen, a process called dehydrogenation.
- Harder than diamond yet more elastic than rubber; tougher than steel yet lighter than aluminium. Graphene is the strongest known material. Graphene possesses other amazing characteristics: Its high electron mobility is 100x faster than silicon; it conducts heat 2x better than diamond; its electrical conductivity is 13x better than copper; it absorbs only
- 2.3% of reflecting light. One of the most useful properties of graphene is that it is a zero-overlap semimetal (with both holes and electrons as charge carriers) with very high electrical conductivity. Hence statement 3 is correct.
- Graphene uses and applications
- Energy storage and solar cells
- Sensor applications
- Graphene ink
- Transistors and memory
- Flexible, stretchable and foldable electronics
- Photodetectors
- Coatings
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Community Answer
With reference to Graphene, consider the following statements: It i...
Explanation:
Graphene:
Graphene is a two-dimensional carbon allotrope, not a three-dimensional one. It is essentially a single layer of carbon atoms arranged in a hexagonal lattice.
Statements:
1. It is a three-dimensional carbon allotrope.
This statement is incorrect as graphene is a two-dimensional carbon allotrope, not a three-dimensional one.
2. It is made up of very tightly bonded carbon atoms organized into a hexagonal lattice.
This statement is correct. Graphene consists of a single layer of carbon atoms arranged in a hexagonal lattice structure.
3. It has very high electrical conductivity.
This statement is also correct. Graphene exhibits exceptional electrical conductivity due to the unique arrangement of its carbon atoms.
Correct Answer:
Therefore, the correct answer is option B) 2 and 3 only, as statements 2 and 3 are accurate descriptions of graphene.
Graphene:
Graphene is a two-dimensional carbon allotrope, not a three-dimensional one. It is essentially a single layer of carbon atoms arranged in a hexagonal lattice.
Statements:
1. It is a three-dimensional carbon allotrope.
This statement is incorrect as graphene is a two-dimensional carbon allotrope, not a three-dimensional one.
2. It is made up of very tightly bonded carbon atoms organized into a hexagonal lattice.
This statement is correct. Graphene consists of a single layer of carbon atoms arranged in a hexagonal lattice structure.
3. It has very high electrical conductivity.
This statement is also correct. Graphene exhibits exceptional electrical conductivity due to the unique arrangement of its carbon atoms.
Correct Answer:
Therefore, the correct answer is option B) 2 and 3 only, as statements 2 and 3 are accurate descriptions of graphene.
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With reference to Graphene, consider the following statements: It is a three-dimensional carbon allotrope. It is made up of very tightly bonded carbon atoms organized into a hexagonal lattice. It has very high electrical conductivity. Which of the statements given above is/are correct?a)1 and 2 onlyb)2 and 3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'B'. Can you explain this answer?
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With reference to Graphene, consider the following statements: It is a three-dimensional carbon allotrope. It is made up of very tightly bonded carbon atoms organized into a hexagonal lattice. It has very high electrical conductivity. Which of the statements given above is/are correct?a)1 and 2 onlyb)2 and 3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'B'. Can you explain this answer? for UPSC 2025 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about With reference to Graphene, consider the following statements: It is a three-dimensional carbon allotrope. It is made up of very tightly bonded carbon atoms organized into a hexagonal lattice. It has very high electrical conductivity. Which of the statements given above is/are correct?a)1 and 2 onlyb)2 and 3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for UPSC 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for With reference to Graphene, consider the following statements: It is a three-dimensional carbon allotrope. It is made up of very tightly bonded carbon atoms organized into a hexagonal lattice. It has very high electrical conductivity. Which of the statements given above is/are correct?a)1 and 2 onlyb)2 and 3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'B'. Can you explain this answer?.
With reference to Graphene, consider the following statements: It is a three-dimensional carbon allotrope. It is made up of very tightly bonded carbon atoms organized into a hexagonal lattice. It has very high electrical conductivity. Which of the statements given above is/are correct?a)1 and 2 onlyb)2 and 3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'B'. Can you explain this answer? for UPSC 2025 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about With reference to Graphene, consider the following statements: It is a three-dimensional carbon allotrope. It is made up of very tightly bonded carbon atoms organized into a hexagonal lattice. It has very high electrical conductivity. Which of the statements given above is/are correct?a)1 and 2 onlyb)2 and 3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for UPSC 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for With reference to Graphene, consider the following statements: It is a three-dimensional carbon allotrope. It is made up of very tightly bonded carbon atoms organized into a hexagonal lattice. It has very high electrical conductivity. Which of the statements given above is/are correct?a)1 and 2 onlyb)2 and 3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'B'. Can you explain this answer?.
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