ICS Part 2 Physics Chapter 17 Short Questions Preparation


12th Class Physics
Short Questions Preparation

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Physics - ICS Part 2 Physics Chapter 17 Short Questions Preparation

Question # 1

Define polymerization,write two examples of polymeric solid

  • Ans 1: Polymers are found by polymerization reaction,.In these reaction relatively simple molecule are chemically combined into massive long chain molecule or three dimensional structure.
    Polythene and nylon are example of polymeric solids.
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Prepare Complete Set Wise Questions For Chapter 6 "ICS Part 2 Physics Chapter 17 Short Questions Preparation "

ICS Part 2 Physics Chapter 17 Short Questions Preparation - Set 1

Question # 1

Define polymerization,write two examples of polymeric solid

  • Ans 1: Polymers are found by polymerization reaction,.In these reaction relatively simple molecule are chemically combined into massive long chain molecule or three dimensional structure.
    Polythene and nylon are example of polymeric solids.
Submit

ICS Part 2 Physics Chapter 17 Short Questions Preparation - Set 2

Question # 1

Distinguished between soft magnetic material and hard magnetic materials.

  • Ans 1: Soft magnetic: The materials in which their domains can be easily orientated on applying external magnetic field and also return to original positions when field is removes.E.g iron.
  • Ans 2: Hard magnetic:The material in which their domains can not easily orientated on applying external magnetic field.But once the domains are lined up by a very strong magnetic field,they will restrain their position after the removal of magnetic field.
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ICS Part 2 Physics Chapter 17 Short Questions Preparation - Set 3

Question # 1

How n type semiconductors are formed?

  • Ans 1: When a silicon crystal is doped with a pentavalent element,e.g arsenic,antimony or phosphorus etc.four valence electrons of the impurity atom form covalent bond with the four neighbouring Si atoms,while the fifth valence electrons provide a free electron in the crystal.Such a doped semiconductor is called n type semiconductor.
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ICS Part 2 Physics Chapter 17 Short Questions Preparation - Set 4

Question # 1

Distinguished between p-type semiconductor and n-type semiconductor.

  • Ans 1: p-type semiconductor:When a trivalent impurity such as aluminium is added into the semiconductor,holes are generated and p type semiconductor is formed.Holes are positive charge carrier.
  • Ans 2: n-type semiconductor: When a pentavalent impurity such as phosphorus is added into the semiconductor,free electrons are generated and n type semiconductor is formed.Charge carriers is in n-type are free electrons.
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ICS Part 2 Physics Chapter 17 Short Questions Preparation

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