Moderate

The most harmful component of detergents causing water pollution is:

Correct answer: C. Alkyl benzenes sulphonate

  • A. Linear alkyl sulphonate
  • B. Sulphates and phosphate
  • C. Alkyl benzenes sulphonate
  • D. None of these

Explanation

Alkyl benzene sulphonate, or ABS, is a persistent detergent surfactant that resists biodegradation and can produce lasting foaming and pollution. Linear alkyl sulphonate is more biodegradable, while phosphates mainly promote eutrophication.

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