Which of the following is an acidic constituent of B.F. slag?


B. FeO

C. MgO

D. CaO

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
  1. __________ test determines the yield strength, Young's modulus of elasticity, percentage reduction in…
  2. Lap joints are preferred over butt joints in soldering/brazing, because these joints are
  3. The thermodynamic law, = constant, is not followed by the
  4. Which of the following phenomenon will exhibit the minimum heat transfer?
  5. Which of the following is not a charge material for cupola?
  6. Fibre glass is a composite material of
  7. The usual energy consumption in electric arc furnace steel making is __________ KWh/ton of steel.
  8. Which of the following is an ore dressing operation?
  9. In a furnace with heating element temperature at 1700°C, the dominant mechanism of heat transfer…
  10. __________ metal is used as a bearing liner material.
  11. Pick out the correct statement.
  12. __________ has the highest melting point out of the following.
  13. Brittleness induced due to the presence of sulphur in steel can be reduced by adding
  14. Screws are specified by their __________ diameters.
  15. What is the critical radius of insulation (cms) for a metallic cylinder, if the convective heat transfer…
  16. While the oxy-acetylene flame produces a temperature of 3200°C, the temperature produced by oxy-hydrogen…
  17. A solution which resists change in its pH value on addition of acid/alkali is called the __________…
  18. In electrical resistance welding, distortion results from the use of improper
  19. __________ is used as a material of construction for the blade of power saw.
  20. The elastic strain energy of a unit length of an edge dislocation as compared to that of a screw dislocation…
  21. __________ test is the appropriate test to determine whether a material is ductile or brittle.
  22. Normalising does not __________ of a metal.
  23. The thickness of oxide film is y at time t. If are the temperature dependent constants, the parabolic…
  24. Nuclear fission of one atom of uranium-235 produces the energy equivalent to about __________ MeV.
  25. Ammonia leakage in the refrigeration system is detected by
  26. Dryness factor of steam is defined as the ratio of the mass of vapor in the mixture to the mass of the…
  27. __________ glass is used in the mercury in glass thermometer meant for measuring a temperature of 500°C.
  28. Lead is poured into the joint between two- __________ pipes.
  29. Glass reacts with
  30. Tin based white metals are used, where bearings are subjected to