Question

Thermal pollution in water bodies is caused due to discharge of

• A. Waste from agricultural fields
  
• B. Hot water from power plants
  
• C. Hot chemicals from industries
  
• D. Waste from mines

Answer 1

The correct option is B Hot water from power plants

Thermal pollution is caused by change in water temperature which leads to degradation of water quality. It is caused due to use of water as a coolant by power plants and industrial manufacturers. When such water is returned to the natural environment at a higher temperature, it decreases oxygen supply and affects ecosystem composition.

So, the correct answer is option B.