Question:
The ore that is NOT used for commercial extraction of metal is
The ore that is NOT used for commercial extraction of metal is
Updated On: Jul 18, 2024
- Wolframite
- Dolomite.
- Cassiterite.
- Uraninite.
Hide Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
The correct option is (B): Dolomite.
Was this answer helpful?
0
0
Top Questions on Ore handling systems
- Data from two production faces of an open pit iron ore mine are given.
Item description Face 1 Face 2 Maximum production capacity (tonne/day) 1600 2000 Fe (%) 63 58 Production cost of ores (in INR/tonne) 1500 1200
Ores from two different faces are blended and supplied with Fe grade not less than 60 %. Based on the demand, the combined production is limited to a maximum of 2500 tonne/day. If the selling price of blended iron ores is INR 4500 /tonne, the optimal production from two faces in tonne/day, for maximizing the profit, respectively are- GATE MN - 2024
- Mining Methods and Machinery
- Ore handling systems
Questions Asked in GATE MN exam
- In a M/M/1 system, the inter-arrival time of dumpers to a shovel follows exponential distribution with a mean arrival rate of 9 dumpers per hour. The service time of the shovel follows exponential distribution with a mean service rate of 12 dumpers per hour. The probability that exactly one dumper is available to the shovel is
- GATE MN - 2024
- Probability and Statistics
- A thermal power plant has an agreement with three mines M1, M2 and M3 to receive 'Grade 1' coal, in the proportion of 60%, 25% and 15%, respectively. The probabilities that a wagon supplied coal to the plant containing below Grade 1' from mines M1, M2 and M3 are 0.02, 0.03 and 0.04, respectively. On a random check, a sample wagon is found to carry below 'Grade 1' coal. The probability that the wagon belongs to mine M1, is____.(round off up to 2 decimals)
- GATE MN - 2024
- Probability and Statistics
- In an underground coal mine, two fatalities and three serious bodily injuries occurred during the year 2022. The average daily employment is 1100 and annual working days is 300. The severity index as per DGMS guideline for the mine is
- GATE MN - 2024
- Underground Coal Mining
- A project network with the sequence of five activities is shown.
The crashing costs of activities areIf the project is crashed by one week, the increase in project cost, in lakh INR, isActivity A B C D E Duration (week) 5 6 8 3 4 Crashing cost per week (lakh INR) 4.0 2.5 2.0 3.0 4.0 - GATE MN - 2024
- Network Analysis
- Four identical districts of a mine are ventilated with a quantity of 3500 m3/min at a fan drift pressure of 1.15 kPa. When one of the districts is sealed off, the change in resultant resistance is 0.072 Ns2m-8. If the fan is stopped, keeping a district sealed, the quantity through the mine becomes 850 m3/min. The natural ventilation pressure in Pa, is
- GATE MN - 2024
- Determination of mine size and mine life
View More Questions