General Studies · Workshop Practice
Which form of marking media is highly recommended for use on finely filed or machine-finished surfaces to give clear lines?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Cellulose lacquer
- 2Chalk powder paste
- 3Prussian blue✓
- 4Copper sulphate solution
Correct answer
Prussian blue
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