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Solid waste treatment by pyrolysis involves

  • A.Autoclaving
  • B.Heating in presence of air
  • C.Heating in presence of acetic acid
  • D.Heating in absence of air

Answer: D

Pyrolysis involves heating in the absence of air.

Pyrolysis is the thermal decomposition of waste at high temperature without oxygen, which breaks it down into gas, oil and char instead of burning it.

Autoclaving is steam sterilisation. Heating in the presence of air is combustion or incineration, and heating with acetic acid has nothing to do with the process.

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