36652. The opening of a 200 mesh screen (Taylor series) is
36653. A gravity decanter is meant for the separation of two __________ density.
36654. The most suitable filter for the removal of very small amount of precipitate from very large volumes of water is the __________ filter.
36655. Separation of solid particles based on their densities is called
36656. Activators are those chemicals which help buoying up one mineral in preference to the other in the froth floatation process. Which of the following is an activator?
36657. __________ are mixed using ribbon blenders.
36658. During agitation of liquids, the
36659. For crushing of solids, the Rittinger's law states that the work required for crushing is proportional to
36660. In a size reduction crushing operation, feed size is 300 to 1500 mm while the product size is 100 to 300 mm. This is a case of the __________ crushing.
36661. As per Taggart's formula, the capacity (kg/hr) of Jaw & Gyratory crushers (for gapes of 10 to 60 cms) is equal to (where, L = Length of feed opening, cms S = Maximum width of discharge opening, cms )
36662. The process by which fine solids is removed from liquids is termed as
36663. Which of the following crushing laws is most accurately applicable to the fine grinding of materials ?
36664. Shell and leaf filter as compared to plate and frame filter
36665. Metallic wire mesh is used as a filtering medium for the separation of dust from dust laden gas in case of a/an
36666. Which of the following is a coarse crusher?
36667. Sorting classifiers employing differential settling methods for separation of particles make use of the differences in their
36668. Separation of particles of various sizes, shapes and densities by allowing them to settle in a fluid is called
36669. The specific cake resistance for incompressible sludges is (where ΔP = pressure drop over cake)
36670. To produce talcum powder, use
36671. Angle of nip of the crushing rolls does not depend upon the
36672. Paddle agitator
36673. The working principle of hydraulic brake system
36674. Gummy & sticky materials like molasses, sugar etc. are best transported/handled by using a __________ conveyor.
36675. Soft & non-abrasive materials can be made into fines by
36676. In constant pressure filtration,
36677. The critical speed of a trommel (N) is related to its dia (D) as
36678. Which of the following minerals is not subjected to magnetic separation method?
36679. Which of the following is not a revolving/tumbling mill used for size reduction?
36680. Which of the following achieves the least reduction ratio for a given feed size?
36681. When it is operated,which mechanism is going to off stage
36682. Filtration should be stopped in a filter press, if the
36683. For coarse reduction of hard solids, use
36684. In a size reduction crushing operation, feed size is 100 to 300 mm. while the product size is 10 to 50 mm. This is a case of the __________ crushing.
36685. Traces of liquid tar fog present in coke oven gas is separated using
36686. Close circuit grinding by a ball mill with air sweeping employs a
36687. Work index is the gross energy (kWh/tonne of feed) necessary to reduce a very large feed to such a size that 80% of product particles will pass through a 0.1 mm screen. The value of work index determined for wet grinding should be multiplied with __________ to get the same for dry grinding.
36688. Choke crushing (in case of a Jaw crusher) compared to free crushing
36689. The specific surface of sherical particles is proportional to (where, Dp = diameter of particle).
36690. Wheat is ground into flour in a
36691. Gravity stamp mill is meant for the __________ crushing.
36692. Washability curve based on float and sink test enables an assessment to be made of the possibility of cleaning a coal fraction based on the
36693. Toothed roll crushers achieve size reduction by
36694. The purpose of tyre sipes is
36695. To get ultrafine particles, the equipment used is a
36696. Vacuum filter is most suitable for the
36697. The porosity of a compressible cake is
36698. Which of the following conveyors cannot be recommended for transportation of abrasive materials ?
36699. Separation of materials into products based on the difference of their sizes is called
36700. For classification of potable (drinking) water, we use a __________ filter.
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