Nichrome is used to make an electric heater because it has:

Correct option is D

The correct answer is (d) ​high resistivity and high melting point.

Explanation: Nichrome wire is generally used as a heating element in heating appliances because it has the following features: It offers a very large resistance.

Information Booster: Nichrome alloy has many properties, including:

• Corrosion resistance: Nichrome is resistant to corrosion. When heated in air, it forms a chromium oxide layer that protects it from further oxidation.
• High melting point: Nichrome has a high melting point of around 1,400 °C (2,550 °F). High electrical resistivity: Nichrome has a high electrical resistivity, which is around 66 times higher than copper.
• Heat tolerance: Nichrome can withstand temperatures of up to 1200°C.
• Malleability: Nichrome is very malleable, which allows it to be beaten into components like foil or coils.
• High mechanical strength: Nichrome alloys are known for their high mechanical strength and creep strength.
• Wear resistance: Nichrome alloys are wear resistant due to their good corrosion resistance and high hardness.
  

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