CHEMICAL ENGINEERING
Q Presence of high concentration of ozone and smog in atmospheric air causes the __________________?
  • A A. Embrittlement & decrease of folding resistance of paper
  • B B. Cracking of rubber products
  • C C. Fading of dye on textiles
  • D D. Damage of electrical insulator on high tension power line
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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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