1.

Which of the following is not a method of pre-cleaning?(a) Solvent(b) Acid blasting(c) Vapour degreasing(d) Media blasting

Answer» Correct option is (b) Acid blasting

To explain I would say: The application of pre-cleaning is one of the steps of inspection of dye penetrant test. Solvent, alkaline, vapour degreasing and media blasting are a few types of pre-cleaning process, but not acid blasting.


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