Question : Which of the following is a semiconductor?
Option 1: Silver
Option 2: Copper
Option 3: Glass
Option 4: Silicon
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Correct Answer: Silicon
Solution : The correct option is Silicon.
Silicon is a widely used semiconductor material in electronics. It possesses electrical conductivity levels situated between those of conductors (such as metals) and insulators (like rubber or glass). Silicon exhibits properties that render it exceptionally suitable for crafting electronic components like transistors, diodes, and integrated circuits.
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Question : Which of the following is arranged in order of decreasing conductivity?
Option 1: Copper, aluminium, steel, silver
Option 2: Aluminium, silver, copper, steel
Option 3: Copper, silver, aluminium, steel
Option 4: Silver, copper, aluminium, steel
Question : Which of the following material is a conductor of electricity?
Option 2: Glass
Option 3: Mica
Option 4: Ebonite
Question : Silicon is a:
Option 1: semiconductor
Option 2: insulator
Option 3: non-conductor
Option 4: carbon dioxide
Question : Haemoglobin in the blood is a complex protein rich in:
Option 1: Iron
Option 2: Silver
Option 3: Copper
Option 4: Gold
Question : Which of the following metals occurs in a free state?
Option 1: Copper
Option 2: Iron
Option 3: Zinc
Option 4: Lead
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