CHEMICAL ENGINEERING
Q Replenishment of dissolved oxygen in water stream polluted with industrial waste occurs by________________?
  • A A. Natural aeration of water stream
  • B B. Photosynthetic action of algae
  • C C. Both a. & b.
  • D D. Neither a. nor b.
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Word of the Day
23 Jul
Aisle
a passage between rows of seats in a building such as a church or theatre, an aircraft, or train.
Ψ·ΩˆΫŒΩ„ ΨͺΩ†Ϊ― Ψ±Ψ§Ψ³Ψͺہ، Ω†Ψ΄Ψͺوں Ϊ©Ϋ’ Ψ―Ψ±Ω…ΫŒΨ§Ω† Ψ±Ψ§Ψ³Ψͺہ

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