Chemical Engineering Chemical Environmental Engineering
Q A gas is termed as non-toxic, if its maximum permissible concentration (TLV) ranges from ______________ ppm?
  • A A. 1000 to 2000
  • B B. 3000 to 6000
  • C C. 6000 to 9000
  • D D. 10000 to 100000
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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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