NCERT Solutions For Class 12 Chemistry Chapter 1

NCERT Solutions For Class 12 Chemistry Chapter 1

NCERT solutions for class 12 chemistry chapter 1 The Solid State is an important study material for the students who are currently studying in CBSE 12th standard. Scoring good marks in class 12th is very important as compared to any other class because the marks scored in class 12 will help you to take admission in your desired course and college.

This was the introduction to chapter 1 of chemistry class 12. Along with NCERT sample questions, one must solve previous year questions and participate in mock tests to practice to perfection.

NCERT Solutions For Class 12 Chemistry Chapter 1

Subtopics of Class 12 Chapter 1 – The Solid State

  • General Characteristics of Solid State
  • Amorphous and Crystalline Solids
  • Classification of Crystalline Solids
  • Molecular Solids
  • Ionic Solids
  • Metallic Solids
  • Covalent or Network Solids
  • Crystal Lattices and Unit Cells
  • Primitive and Centred Unit Cells
  • Number of Atoms in a Unit Cell
  • Primitive Cubic Unit Cell
  • Body-Centred Cubic Unit Cell
  • Face-Centred Cubic Unit Cell
  • Close-Packed Structures
  • The formula of a Compound and Number of Voids Filled
  • Packing Efficiency
  • Packing Efficiency in hcp and ccp Structures
  • The efficiency of Packing in Body-Centred Cubic Structures
  • Packing Efficiency in Simple Cubic Lattice
  • Calculations Involving Unit Cell Dimensions
  • Imperfections in Solids
  • Types of Point Defects
  • Electrical Properties
  • Conduction of Electricity in Metals
  • Conduction of Electricity in Semiconductors
  • Magnetic Properties.
  • There are three states of matter. They are – Solid, liquid and gas. Some of the properties of solids are:
  • Solids have a definite shape, volume, and mass
  • Distance and force: Intermolecular distance is short whereas intermolecular force is strong
  • Solids are rigid and cannot be compressed
  • Particles have fixed positions

Solids are further classified into two types: Amorphous and crystalline. Crystalline solids have a definite geometric shape, has long-range order. These solids are isotropic and do not have definite heat of fusion. Examples of crystalline solids are Quartz and sodium chloride. Crystalline solids are also called true solids.

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