Related Questions

Ball mills and tube mills with flint or porcelain balls are used for size reduction of
A Asbestos
B Rubber
C Non-metallic ores
D Limestone
Size reduction of the __________ can be suitably done by ball mills, crushing rolls and rod mills.
A Metalliferrous ores
B Non-metallic ores
C Basic slags
D Asbestos & mica
__________ mills fall in the category of tumbling mills,
A Ball and pebble
B Rod and tube
C Compartment
D All of the above
Toothed roll crushers achieve size reduction by
A Tearing (shear) and compression
B Impact and attrition
C Both A & B
D Neither A nor B
Which of the following size reduction equipments employs mainly attrition for ultrafine grinding?
A Jet mills
B Fluid energy mill
C Micronizer
D All of the above
Colloid particles
A Can be seen under ultra microscope
B Are non- dialyzable
C Can not pass through semi- permeable membrane
D Are about 600-1000nm in sizes
E Form homogenous solution in water
Followings are the colloid solution
A Hydroxyl ethyl starch
B Albumin
C Gelatin derivatives
D Ringers lactate solution
E One fifth normal saline
Colloid solutions are
A Albumin
B Gelatin derivatives
C Hydroxy ethyl starch
D 5% dextrose in normal saline
E Ringer's lactate solution
An emulsion is a colloid of a
A Gas in a liquid
B Liquid in a liquid
C Liquid in a gas
D Gas in a solid
Which is a natural colloid ?
A Sodium chloride
B Urea
C Cane-sugar
D Blood

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