Question

state any two precautions that can help avoid the choking of drains

Answer 1

Answer:

The 2 important steps that can prevent choking of drains is that avoid the use of plastics and use more water to flush the drainage system.  

Explanation:  

The use of plastics in the houses and environment leads to the clogging if the drains because the plastics are non-biodegradable substances that tend to aggregate and block the water movement, similarly the solid sludge also should be flushed with enormous water thereby avoiding water percolation.