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Q: Jumper is a tool used for
  • A. testing of stones
  • B. quarrying of stones
  • C. dressing of stones
  • D. None of the above
Correct Answer: Option B - Jumper ¬- It is used to make blast hole and more effective in boring a nearly vertical hole or used in quarrying of stone. Some of the quarrying tools are jumper, wedge, pin, hammer, dipper or scraping spoon, tamping bar, priming needle, crow bar.
B. Jumper ¬- It is used to make blast hole and more effective in boring a nearly vertical hole or used in quarrying of stone. Some of the quarrying tools are jumper, wedge, pin, hammer, dipper or scraping spoon, tamping bar, priming needle, crow bar.

Explanations:

Jumper ¬- It is used to make blast hole and more effective in boring a nearly vertical hole or used in quarrying of stone. Some of the quarrying tools are jumper, wedge, pin, hammer, dipper or scraping spoon, tamping bar, priming needle, crow bar.