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Which of the following statements about diamond are correct?
1. It is used as a gem in jewellery because of its ability to reflect light.
2. It is good conductor of electricity.
3. It is used for cutting glass, marble stones and other hard materials.
4. It is used for drilling of rocks.
Q. Select the correct answer using the codes given below :
  • a)
    1, 3 and 4
  • b)
    2, 3 and 4
  • c)
    1, 2 and 3
  • d)
    2 and 4
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Which of the following statements about diamond are correct?1. It is u...
Diamond, an allotrope of carbon, has very high refractive because of which it is used as a gem in jewellery. It is used for cutting glass, marble stones and other hard materials and for drilling of rocks. It is a bad conductor of electricity. It is the hardest material known.
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Most Upvoted Answer
Which of the following statements about diamond are correct?1. It is u...
Statement 1: Diamond is used as a gem in jewelry because of its ability to reflect light.
Statement 2: Diamond is a good conductor of electricity.
Statement 3: Diamond is used for cutting glass, marble stones, and other hard materials.
Statement 4: Diamond is used for drilling rocks.

Explanation:

Statement 1: It is used as a gem in jewelry because of its ability to reflect light.
This statement is correct. Diamond is known for its brilliance and ability to reflect light. It has a high refractive index, which means it can bend and reflect light in a way that makes it sparkle and shine. This property makes it highly desirable for use in jewelry.

Statement 2: Diamond is a good conductor of electricity.
This statement is incorrect. Diamond is actually a poor conductor of electricity. Unlike metals, which have a high number of free electrons that can carry an electric current, diamond is made up of carbon atoms arranged in a crystal lattice structure, which does not allow the easy movement of electrons. However, diamond can conduct heat very well due to its high thermal conductivity.

Statement 3: Diamond is used for cutting glass, marble stones, and other hard materials.
This statement is correct. Diamond is the hardest known natural material, scoring a 10 on the Mohs scale of mineral hardness. This hardness makes it ideal for cutting and grinding other hard materials, including glass, marble stones, and various industrial applications.

Statement 4: Diamond is used for drilling rocks.
This statement is correct. Diamond drill bits are commonly used in the mining and construction industries for drilling rocks and other hard materials. The hardness of diamond allows it to effectively cut through tough materials, making it an essential tool for drilling and exploration purposes.

In conclusion, statements 1, 3, and 4 are correct, while statement 2 is incorrect.
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Which of the following statements about diamond are correct?1. It is used as a gem in jewellery because of its ability to reflect light.2. It is good conductor of electricity.3. It is used for cutting glass, marble stones and other hard materials.4. It is used for drilling of rocks.Q. Select the correct answer using the codes given below :a)1, 3 and 4b)2, 3 and 4c)1, 2 and 3d)2 and 4Correct answer is option 'A'. Can you explain this answer?
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