Chemical Engineering Chemical Environmental Engineering
Q From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about ________________ ppm?
  • A A. 5
  • B B. 50
  • C C. 500
  • D D. 5000
Previous Maximum permissible concentration (i.e. TLV) of DDT in …
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Word of the Day
22 Jul
Combative
ready or eager to fight or argue.
Ω„Ϊ‘Ψ§Ϊ©Ψ§ΨŒ Ω…ΨͺΩ†Ψ§Ψ²ΨΉΨŒ Ψ¬ΪΎΪ―Ϊ‘Ψ§Ω„Ωˆ

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