Mineral Dressing In Mining — Part 1 MCQs with Explanations

1.4 is the correct answer to “Which of the following is the approximate conversion factor for sieve size to projected diameter in microscopic procedure”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

15 cm is the correct answer to “What is the maximum feed size in secondary crusher”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

sorting is the correct answer to “A separation dependent on optical and radioactive properties is called”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

burden on routine analysis would be less and relatively few sieves will be needed to check the features of size distribution is the correct answer to “What advantage you will get if it is known that data obtained from the material usually yields a straight line point”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

thiobacillus ferrooxidans is the correct answer to “Which of the following bacterium is used to enhance the rate of bacterial oxidation to liberating the occluded gold for subsequent removal by cyanide leaching”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

Partly circular and partly parabolic is the correct answer to “The path of a typical ball mill in a ball mill is”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

ash determination is the correct answer to “The radiation absorbed by elements of low atomic number is lower than that absorbed by elements of high atomic number. This variation of absorption co-efficient with atomic number can be very well applied to”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

None of the above is the correct answer to “The mill which accepts the lowest size of feed is”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

Differential acceleration is the correct answer to “When the particles of same or different specific gravity come to rest at different instants, the phenomenon is termed as”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

powdered products is the correct answer to “The laser beam particle size analysis is suitably applicable for particle size measurement of”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

30 is the correct answer to “In-situ are of 1.5% Cu got diluted with waste rock of value 0.2% Cu. If the resultant extracted ore has 1.2% Cu, what is the percentage of dilution”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

particle with larger diameter has the higher terminal velocity is the correct answer to “If the two particles have the same density but different diameter then which of the following is true”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

comminution is the correct answer to “This is the method in which the particle size of the ore is progressively reduced until the clean particles of mineral can be separated”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

differences in physico-chemical surface properties is the correct answer to “Which of the following properties are utilized in froth floatation”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

$$\cos \frac{\theta }{2} = \left( {R + a} \right) \div \left( {R + r} \right)$$ is the correct answer to “Which of the following equation can be used to determine the maximum size of rock gripped in relation to roll diameter and the reduction ratio required”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

20 m3/min is the correct answer to “A mineral processing plant treating almost 10,000 ton of ore per day requires water almost”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

frothers should have the ability to adsorb on the air-water interface to reducing surface tension and stabilizing air-bubble is the correct answer to “Which of the following property of frothing action is very useful in froth floatation technique”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

BS 1796 is the correct answer to “The general procedure for test sieving are comprehensively covered in”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

smaller size of crusher is the correct answer to “Reduction ratio increases with”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

that most of the energy input is absorbed by the machine itself and only a fraction is available for breaking the material is the correct answer to “One of the greatest problem lies in comminution is”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

$$v = \frac{{{d^2}g\left( {{D_s} - {D_f}} \right)}}{{18n}}$$ is the correct answer to “Which of the following is the Stoke's equation for the derivation of terminal velocity of particles”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

measurement of the rate of settling of powder particles uniformly dispersed in a fluid is the correct answer to “Sedimentation method is based on”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

HMS is the correct answer to “The method of separation of two or more of minerals of different specific gravity is called”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

PID algorithm is the correct answer to “In the field of automatic control of mineral processing operation, the output signal is controlled by a standard algorithm known as”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

slimes is the correct answer to “The fine product from classification is known as”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

recursive least squares estimation is the correct answer to “It is s simple algorithm used to update the model parameters to give a reasonably accurate prediction of the dynamic behavior of the process”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

jaw crusher is the correct answer to “Which crusher is to be recommended for use where the crusher gap is more important than the capacity”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

impact crusher is the correct answer to “Hammer mill is a type of”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

test sieving is the correct answer to “Which of the following is the widely used method for particle size analysis”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

First decreases and then increases is the correct answer to “As the ball load increases, the energy consumed by ball mill”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

Blake type double toggle is the correct answer to “For heavy duty crushing on hard material, the type of jaw crusher normally selected is”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

equivalent diameter is the correct answer to “How will you quote the size of an irregular particle using a single quantity”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

Rosin-Remmler method is the correct answer to “This is one of the most common methods often used to presenting the results of sieve analyses performed on material which has been ground to ball mills”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

5 is the correct answer to “Normally how many cyclones are arranged in series within the unit of cyclosizer”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

43.56 is the correct answer to “If the bond work index for quartz is 13.57 what is the same for graphite”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

shape is the correct answer to “Grinding within a tumbling mill is not influenced by”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

54 is the correct answer to “The feed to a flotation plant assays 0.75% Cu. The concentrate produced assays 30% Cu and the tailings 0.2%. Calculate the ratio of concentration”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

288 kg/hr is the correct answer to “A slurry stream containing quartz is diverted into one litre density can. The time taken to fill up the can is measured as 5 sec. The pulp density is measured to be 1250 kg/m 3 . Calculate the mass flow rate of quartz within the slurry. Assuming the density of quartz is 2650kg/m 3”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

degree of liberation is the correct answer to “The percentage of the mineral occurring as free particles in the ore in relation to the total content is known as”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

overflow mill is the correct answer to “Which of the following rod mill is widely used in mining industry with the principal function is to convert crushing-plant product into ball mill feed introduced through one trunnion and discharges through the other”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.