Multiple choice

The river Periyar gets pollution mainly from�

  1. Tanneries

  2. Paper factories

  3. Chemical factories

  4. Sugar mills

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The Periyar river in Kerala is heavily polluted by chemical factories, particularly in the Eloor industrial area. These factories discharge toxic effluents containing heavy metals and organic chemicals, severely degrading water quality.