Limestone is added in the blast furnace (during pig iron manufacture) to

A. Form slag by combining with impurities

B. Supply heat by undergoing exothermic reaction with impurities

C. Reduce the coke consumption

D. Reduce slag viscosity

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

You can do it
  1. __________ is used as a material of construction for the blade of power saw.
  2. Larger length & diameter water pipes are made by
  3. To improve the machinability of steel, it is generally subjected to
  4. Leakage in a cooking gas cylinder is detected by
  5. Nuclear fission of one atom of uranium-235 produces the energy equivalent to about __________ MeV.
  6. A cylindrical rod subjected to a tensile strain within the elastic limit undergoes a volume change.…
  7. Large scale fire on fuel gas line is normally extinguished by
  8. __________ number determines whether the fluid flow in an open channel is supercritical, critical or…
  9. Consideration of the creep is the most important in case of the
  10. Compressed dry air is used as the cutting fluid, while machining
  11. M10 index of coke indicates its
  12. Transformer cores are normally made from
  13. Tin based white metals are used, where bearings are subjected to
  14. Property responsible for the talcum powder to cling to the skin is the
  15. The stress at which extension of the material takes place more rapidly as compared to the increase in…
  16. The heat released by cooling one mole of copper from 400 K to room temperature (300 K) is (assume :…
  17. Globular form of cementite is formed during the __________ process.
  18. Oxygen cylinders used for autogenous (cutting/welding) purposes are
  19. Alloying elements present in Haynes stellite, which has superior performance than high speed steel,…
  20. Normalising does not __________ of a metal.
  21. __________ has the highest melting point out of the following.
  22. Pick out the wrong statement.
  23. In a furnace with heating element temperature at 1700°C, the dominant mechanism of heat transfer…
  24. Wrought iron does not have
  25. In case of brasses, with decreasing zinc percentage and increasing copper percentage, its __________…
  26. With increasing carbon percent in steel beyond 0.8%, its ultimate tensile strength (UTS) and __________…
  27. The most important requirement for aluminium industry is the availability of cheap
  28. Between 230 and 370°C, blue brittleness is caused in mild steel because of the
  29. The delivery pressure of boiler feed water pump compared to the boiler steam pressure is
  30. The 'transition temperature' for ductile to brittle behaviour of steel increases with increase in the…