Presence of MgO in alumino-silicate refractories ______________ its refractoriness ?

Related Mcqs:

Magnesite refractories are generally not used in the__________________?

A. Electric furnace walls B. Steel melting furnace C. Open hearth furnace D. Burning zone of cement kilns...

Measurement of the amount of dry gas collected over water from volume of moist gas is based on the___________________?

A. Charle’s law B. Dalton’s law of partial pressures C. Avogadro’s hypothesis D. Boyle’s law...

Test piece for determination of RUL of a refractory is heated in a/an__________________?

A. Oxidising atmosphere B. Reducing atmosphere C. Electric furnace D. Neutral atmosphere...

Solutions having the same osmotic pressure are called _____________ solutions?

A. Dilute B. Ideal C. Isotonic D. Saturated...

Pick out the wrong unit conversion of calorific value?

A. 1 kcal/kg = 1.8 BTU/lb = 4.186 kJ/kg B. 1 BTU/ft3 = 8.9 kcal/m3 = 0.038 MJ/m3 C. 1 BTU/lb = 2.3 kcal/kg D. 1 kcal/m3 = 0.1124 BTU/ft3...