RO & ARO Paper I GS (16 June 2024)

Question 1:

River water pollution is measured by-

नदी का जल प्रदूषण मापा जाता है-

  • जल में घुली ऑक्सीजन की मात्रा से By the amount of oxygen dissolved in water

  • जल में घुली क्लोरीन की मात्रा से By the amount of chlorine dissolved in water

  • जल में घुली ओजोन की मात्रा से By the amount of ozone dissolved in water

  • जल में घुली नाइट्रोजन की मात्रा से By the amount of nitrogen dissolved in water

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