Q. Which of the following is not used as a filter medium in case of corrosive liquids ?

View solution

Q. In ball mill operation, the feed size (Df in meters) and the ball diameter (Db in metres) are related as ( where, K = grindability constant (varying from 0.9 to 1.4 in increasing order of hard ness))

View solution

Q. Pine oil and cresylic acid are used as __________ in the froth floatation process.

View solution

Q. Grinding characteristic of a material is given by its

View solution

Q. Which of the following is not a non-metalliferous mineral?

View solution

Q. Filter medium resistance is important during the __________ of filtration.

View solution

Q. Float and sink test determines the possibility of cleaning of coal by a process based on the

View solution

Q. For raschig rings, the sphericity is

View solution

Q. For Indian standard (IS) screens, the mesh number is equal to its aperture size expressed to the nearest deca-micron (0.01 mm). Aperture width of IS screen of mesh number 50 will be approximately __________ microns.

View solution

Q. __________ mills are termed as disintegrators.

View solution

Q. Supporting legs of a plate and frame filter is normally made of

View solution

Q. During filtration operation, the filtrate encounters the resistance of the

View solution

Q. Filtration rate does not depend upon the

View solution

Q. Which of the following is a fine crusher?

View solution

Q. __________ is a cohesive solid.

View solution

Q. The optimum moisture content in solids to be crushed/ground ranges from __________ percent.

View solution

Q. Use of grinding aids results in the

View solution

Q. A belt conveyor used for the transportation of materials can

View solution

Q. Which of the following is not used as a surface active agent in a flocculation operation?

View solution

Q. __________ mill is not a revolving mill.

View solution