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AP EAMCET2007Chemistryp Block Elements (Group 13 & 14)

Which of the following statements is correct?

Options

  1. ASilicon doped with boron is an n -type semiconductor
  2. BSilicon doped with arsenic is a p -type semiconductor
  3. CMetals are good conductors of electricity
  4. DElectrical conductivity of semiconductors decreases with increasing temperature

Correct answer

C. Metals are good conductors of electricity

Step-by-step solution

Metals are good conductors of electricity due to the presence of free electrons. Electrical conductivity of semiconductors increases with increase in temperature.

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