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1. What do you mean by catenation?
The property of atom to form bonds with itself resulting in a single large structure or chain is called catenation.
 
2. Mention the advantages of natural gas.
Advantages of natural gas:
  • Natural gas generates a lot of heat since it is quickly burned.
  • It residues.
  • This can be simply provided via pipes.
  • It can be utilised as a source of fuel in both homes and industries.