Chemical Engineering
Q Oxide layer formed on the non-ferrous metal surface after its annealing is__________________?
  • A A. Removed by acid pickling
  • B B. Hammered into the surface
  • C C. Removed with coarse emery cloth
  • D D. Left as such to protect the surface
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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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