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Doctors Medicines MCQs Q&A

  1. Only b
  2. Only b and c
  3. Only a and b
  4. All of the above
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1 Answers

Option 3 : Only a and b

The Correct Answer is Only a and b.

  • Diamond:
    • It is a well-known allotrope of carbon.
    • It exhibits high hardness, high melting point, thermal conductivity and high dispersion of light. 
    • It is a poor electrical conductor.
    • It is a pure form of carbon.
    • It is the hardest known natural mineral.
    • It is widely used in cutting, and jewelry, and as a potential semiconductor material.
  • Graphene:
    • It is also an allotrope of carbon
    • It is a sheet of a single layer of carbon atoms.
    • It is a good conductor of electricity and also a pure form of carbon.
    • Layers of Graphene make up Graphite. 
    • It is widely used in electronics.
  • Carborundum:
    • It is also known as Silicon carbide.
    • It is not an allotrope of carbon.
    • It is a semiconductor containing silicon and carbon.
    • It is widely used as an abrasive in industries and also used in car brakes etc.
    • It has a hexagonal crystal structure. 
    • It has high hardness and high thermal conductivity.
    • It behaves as an electrical insulator in its purest form.
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Related Questions

The question given below consists of a statement, followed by three arguments numbered I, II and III. You have to decide which of the arguments is/are ‘strong' arguments and which is/are ‘weak' arguments and accordingly choose your answer from the alternatives given below each question. Statement:  The central government has told the Supreme Court that anti-adultery laws were required to protect the ‘sanctity of marriage and the institution of family', and any attempt to do away with these laws would hurt ‘Indian ethos'. The government was responding to a court notice on a public interest litigation which wanted the law struck down as it was not gender neutral and the provisions were tilted against men. Which among the following arguments support the above statement regarding the ‘revision of such laws' in the best possible manner Arguments: I. It seemed to suggest that women were chattel owned by men and could be guided and misguided. II. This would erode the sanctity of marriage as an institution and the societal fabric. The issue of making the provision gender neutral was already pending before the government. III. Any step towards decriminalising the offence in the interim would be detrimental to Indian ethos which gives paramount importance to the institution and sanctity of marriage.?
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