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Exams > SAIL Junior Officer (E-0) 2022 > General Plant Operation Engineering (GPOE / GPA)

CHAPTER 12 : MINING MCQs

Total Questions : 5
Question 1. What is a material that is put inside of a blast hole to help prevent gases from escaping.
  1.    Drilling
  2.    Blasting
  3.    Stemming
  4.    Mining
 Discuss Question
Answer: Option C. -> Stemming


Question 2. In which process nonel technology generates less vibration.
  1.    Burden
  2.    Blasting
  3.    Stemming
  4.    Mining
 Discuss Question
Answer: Option B. -> Blasting


Question 3. Distance from the free face to the first line of the holes is known as ?
  1.    Burden
  2.    Blasting
  3.    Stemming
  4.    Drilling
 Discuss Question
Answer: Option A. -> Burden


Question 4. Sub-grade drilling should be approx. % of the bench height.
  1.    8 %
  2.    10 - 11%
  3.    12 -14%
  4.    14%
 Discuss Question
Answer: Option B. -> 10 - 11%


Question 5. Nonel is  which type detonator designed to initiate explosions.
  1.    Short tube
  2.    Long Tube
  3.    shock tube
  4.    all
 Discuss Question
Answer: Option C. -> shock tube


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