Pick up the correct statement from the following: Roasting is not necessary if i

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Question
Pick up the correct statement from the following:
Options
A. Roasting is not necessary if iron ore is an oxide
B. Impurities float on the molten iron as slag
C. The slag contains lime about 45%
D. The molten iron is made to run, in a long channel formed in sand called 'sow'
E. All the above.

Correct Answer

All the above.

More questions

2. Pick up the correct statement from the following :
Options
A. The distance between two successive crests or troughs of a wave, is called, the wave length
B. The wave length is measured in metres and a fraction of a metre
C. The wave length is generally denoted by ?
D. The length of the crest from the mid point, is called amplitude
E. All of these

3. Pick up the correct statement from the following:
Options
A. Uniform series compound amount factor =
B. Uniform series present worth factor =
C. Sinking fund factor =
D. Capital recovery factor = where letters carry their usual meanings.
E. All of these

4. The correction applied to the measured base of length L is
Options
A.
B. where w is the weight of tape/m
C. where h is height difference of end supports
D. Reduction to mean sea level =
E. all the above.

5. For an ordinary Portland cement
Options
A. residual does not exceed 10% when sieved through IS Sieve No. 9
B. soundness varies from 5 to 10 mm
C. initial setting time is not less than 30 minutes
D. compressive stress after 7 days, is not less than 175 kg/cm²
E. all the above.

6. Pick up the correct statement from the following:
Options
A. Permeability is a measure of conducting the magnetic lines of force in the material.
B. Permeability is a measure of the extent to which magnetic lines of force can penetrate a medium.
C. Permeability is expressed as the ratio of the magnetic flux density (B) to the field strength of the magnetizing field.
D. The force between the magnetic poles is inversely proportional to the permeability of the medium.
E. All of these

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