Related Questions

Size reduction of fibrous materials like wood, asbestos, mica etc. is done by a disintegrator exemplified by the
A Blake jaw crusher
B Cage mill
C Stamp mill
D Bradford's breaker
Out of the following size reduction equipments, the maximum feed size can be accepted by the
A Tube mill
B Ball mill
C Jaw crusher
D Jet pulveriser
Arrange the following size reduction equipment in the decreasing order of the average particle size produced by each of them.
A Jaw crusher, Ball mill, Fluid energy mill
B Ball mill, Jaw crusher, Fluid energy mill
C Fluid energy mill, Jaw crusher, Ball mill
D Fluid energy mill, Ball mill, Jaw crusher
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
Maximum size reduction in a ball mill is done by the, __________ action.
A Attrition
B Compression
C Impact
D Cutting
Inhalation of asbestos is associated with
A Mesothelioma
B Lung carcinoma
C Sarcoidosis
D Pulmonary fibrosis
E Leukaemia
The maximum permissible span of asbestos cement sheets is
A 650 mm
B 810 mm
C 1250 mm
D 1680 mm
Initial setting time of cement for asbestos cement products should be not less than
A 30 minutes
B 50 minutes
C 75 minutes
D 90 minutes
Normally, the angle of roof truss with asbestos sheets should not be less than
A $$26{\frac{1}{2}^ \circ }$$
B 30°
C 35°
D 40°
Asbestos is
A Corrugated sheet used for roofing
B An incombustible fire proof material
C An organic substance
D All the above

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