Workshop Technology
When more volume of acetylene and less volume of oxygen is supplied, then a ___ flame is obtained.

Neutral
Oxidizing
Carburising
None of the listed here

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Workshop Technology
Piercing is an operation of cutting

A hole (other than cylindrical) in a sheet of metal by the punch and the die
A flat sheet to the desired shape
A number of holes evenly spaced in a regular pattern on a sheet of metal
A cylindrical hole in a sheet of metal by the punch and the die

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