Mineral Dressing In Metallurgy — Part 1 MCQs with Explanations

classification is the correct answer to “Separation of particles of various sizes, shapes & densities by allowing them to settle in a fluid is called”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

P-4, Q-3, R-2, S-1 is the correct answer to “Match the following: Group 1 Group 2 P. Floatation 1. Separation on the basis of density difference Q. Electrostatic concentration 2. Reduction in size R. Comminution 3. Surface charge is induced in particles S. Heavy media separation 4. Modification of surface tension”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

all A, B and C is the correct answer to “The capacity of a pneumatic conveying system depends upon the”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

all A, B and C is the correct answer to “The energy consumed by a ball mill depends upon”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

volume is the correct answer to “Equivalent diameter of a particle is the diameter of the sphere having the same as the actual particle.”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

wet classifier is the correct answer to “Hydrocyclone is a”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

frother is the correct answer to “In the floatation process, pine oil is used as”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

Mineral P ascends with air bubbles preferentially over mineral Q is the correct answer to “The figure below shows a schematic of a water droplet placed on the surfaces of two mineral P and Q. Given this information, pick the correct statement from the following:”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

electro-static precipitator is the correct answer to “The most efficient equipment for removal of sub-micronic dust particles from blast furnace gas is the”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

gangue is the correct answer to “Impurities present with minerals is called”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

energy absorbed by the solid to the energy Supplied to the crusher is the correct answer to “Mechanical efficiency of a crusher is defined as the ratio of the”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

74 is the correct answer to “200 mesh sieve size corresponds to . . . . . . . . microns.”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

a coarse feed requires a larger ball is the correct answer to “In case of a ball mil,”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

74 is the correct answer to “The aperture size (in μm) of a 200 mesh sieve having a wire diameter of 53 μm is”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

P-2, Q-4, R-1, S-3 is the correct answer to “Match the following processes with their physical principles. Group 1 Group 2 P. Floatation 1. Difference in specific gravity Q. Jigging 2. Difference in hydrophobicity R. Heavy media separation 3. Difference in lateral movements S. Tabling 4. Differential initial accelaration”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

both A and B is the correct answer to “The grinding in hammer crusher takes place due to”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

P-3, Q-4, R-2, S-1 is the correct answer to “Match the unit operation in Group I with its corresponding principal in Group II : Group I Group II P. Jigging 1. Modification of surface tension Q. Tabling 2. Difference in density R. Heavy media separation 3. Differential initial acceleration S. Flotation 4. Differential lateral movement”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

Miiieral surface hydrophbicity is the correct answer to “Floatation beneficiation is based on the principle of”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

form a water repelling film on the mineral surface is the correct answer to “Role of a "collector" in floatation is to”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

Electrical conductivities is the correct answer to “Electrostatic separation of minerals from each other is based on their differences in the following property:”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

classification is the correct answer to “Cyclones are primarily used for”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

difference in specific gravities is the correct answer to “Ore concentration by Jigging is based on the . . . . . . . . of the particles.”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

Froth flotation is the correct answer to “The process for selectively separating hydrophobic materials from hydrophilic.”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

Decreases is the correct answer to “The screen effectiveness . . . . . . . . with increase in the capacity of the screen.”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

suitable for sticky materials is the correct answer to “Screw conveyors are”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

ball mill and a classifier is the correct answer to “A simple close grinding circuit may consist of a”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

abandons its circular path for a parabolic path is the correct answer to “When the weight of the ball inside a ball mill is just balanced by the centrifugal force, the ball”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

P-3, Q-2, R-4, S-1 is the correct answer to “Match the reagents in Group 1 with their properties in Group 2 , in the context of froth floatation. Group 1 Group 2 P. Frother 1. Alters the chemical nature of mineral surfaces so that they become hydrophobic due to action of collector Q. Activator 2. Absorbs on air-water interface and reduces surface tension to stabilise the bubble R. Regulator 3. Increases the selectivity of floatation by rendering certain mineral hydrophilic S. Depressant 4. Modifies the action of collector either by intensifying or reducing its water repellant effect”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

none of these is the correct answer to “Electrical energy consumed by a jaw crusher is not a function of the”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

Inch is the correct answer to “200 mesh screen has 200 openings per”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

P-4, Q-1, R-2, S-3 is the correct answer to “Match the processes in Group 1 with the physical principales in Group 2 . Group 1 Group 2 P. Floatation 1. Differential initial accelaration Q. Jigging 2. Differential lateral movement R. Tabling 3. Differential in density S. Heavy media separation 4. Modification of surface tension”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

screw is the correct answer to “Dry powdery solid materials are transported by a . . . . . . . . Conveyor.”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

copper sulphate is the correct answer to “Activators are those chemicals which help buoying up one mineral in preference to the other in the troth floatation process. Which of the following is an activator”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

Jaw crusher is the correct answer to “Which of the following size reduction equipment's can accept feed size > 25 cms”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

3 is the correct answer to “The figure below shows the cumulative size distribution of particles of a crushed mineral. 10 kg of this material is first passed through a sieve of size 400 micron and then through a sieve of size 300 micron. The weight of mineral (in kg ) that is retained on the 300 micron sieve is . . . . . . . .”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

absorbs on the surface of the minerals and makes it hydrophobic is the correct answer to “In froth floatation, collector refers to a reagent which primarily,”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

all of these is the correct answer to “What are the oxide ore of iron”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

heavy loads & short runs is the correct answer to “Apron conveyors are used for the”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

74 is the correct answer to “A 200 mesh screen made of steel wire having a diameter of 0.053 mm has an aperture size (in μm)”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.

Potassium ethyl xanthate is the correct answer to “The following is a typical anionic collector used in floatation.”. This question is standard in competitive examination syllabi for Mineral Dressing In Metallurgy.