Oilers/Plant Tenders (HHC) Civil Service Practice Exam

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Why should a mushroomed chisel head not be used?

Its sharpness is reduced
Chips might fly from the head
It is too heavy to handle
It will not fit properly

The correct answer is: Chips might fly from the head

The primary reason a mushroomed chisel head should not be used is due to the risk of chips flying from the head during use. When a chisel becomes mushroomed, it typically means that the edges have flared out, losing their original shape. This alteration can create a hazardous situation, as pieces of metal can break off during striking and potentially fly towards the user or bystanders, increasing the risk of injury. While it is true that a mushroomed chisel may not cut effectively or could be difficult to handle due to its shape and weight, the immediate danger of flying chips makes its use particularly concerning. Therefore, ensuring that tools are maintained in proper condition is essential not only for effectiveness but also for safety.