CHEMICAL ENGINEERING
Q BOD of raw municipal sewage may be in the range of about _____________ mg/litre?
  • A A. 1-2
  • B B. 5-10
  • C C. 150-300
  • D D. 2000-3000
Previous Tolerable limit of nitrogen oxides in air is __________…
Next Iron & manganese present in the polluted water is remov…
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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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