If a refractory contains high content of silicon, it means refractory is__________________?

Related Mcqs:

For the allotropic forms of iron, the points of arrest are __________________?

A. the points where no further change oc-curs B. constant for all metals C. the points where there is no further flow of metal D. the points of discontinuity E. the points where major changes take place...

Materials after cold working are subjected to following process to relieve stresses__________________?

A. hot working B. tempering C. normalising D. annealing E. special heat treatment...

Carbon steel is_______________?

A. made by adding carbon in steel B. refined from cast iron C. an alloy of iron and carbon with varying quantities of phosphorus and sulphur D. extensively used for making cutting tools E. extremely brittle...

The hardness of steel increases if it contains____________________?

A. austenite B. martensite C. pearlite D. cementite E. all of the above...

Which one of the following metals would work-harden more quickly than the others__________________?

A. copper B. brass C. lead D. silver E. aluminium...