Classify the following as amorphous or c | Class 12 Chemistry Chapter The Solid State, The Solid State NCERT Solutions

Question:

Classify the following as amorphous or crystalline solids:
Polyurethane, naphthalene, benzoic acid, teflon, potassium nitrate, cellophane, polyvinyl chloride, fibre glass, copper.

Answer:

Solids are classified into 2 types:

Crystalline solids

Amorphous solids

Crystalline solids-exists as small crystals,each crystal having a characterstic geometrical shape.The atoms,ions or molecules are arranged in a regular, repeating three dimensional pattern called the crystal lattice.

Amorphous solids( Greek term amorphous-no form)- has atoms, molecules or ions arranged at random & lacks the ordered crystalline lattice.

 

Naphthalene, benzoic acid, potassium nitrate, copper

Polyurethane, teflon, cellophane, polyvinyl chloride, fibre glass

 


Study Tips for Answering NCERT Questions:

NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:

  • Read the question carefully and focus on the core concept being asked.
  • Reference examples and data from the chapter when answering questions about The Solid State.
  • Review previous year question papers to get an idea of how such questions may be framed in exams.
  • Practice answering questions within the time limit to improve your speed and accuracy.
  • Discuss your answers with your teachers or peers to get feedback and improve your understanding.

Comments

  • Gourav
  • 2019-09-02 19:53:23

Thanks for this but I want important question answer for haryana open board


  • Pavan Yadav
  • 2018-05-27 02:37:52

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Comment(s) on this Question

Welcome to the NCERT Solutions for Class 12 Chemistry - Chapter . This page offers a step-by-step solution to the specific question from Excercise 1 , Question 3: Classify the following as amorphous or crystalline solids: Polyurethane, naphthalene, benzoic acid,....