__________ is used as a flux in the smelting of copper ore like chalcopyrite.

A. Coke breeze

B. Lime powder

C. Silica/quartz

D. Dolomite

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

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  1. Double Contact Double Absorption (DCDA) process is the most recent process for the manufacture of
  2. Which of the following is not required in the manufacture of soda ash by Solvay process?
  3. At a given temperature, the equilibrium yield of SO3 obtained from the oxidation of SO2 is proportional…
  4. Concentration of NaOH solution produced by mercury electrolytic cell is about __________ percent.
  5. Heating of __________ to 120°C, produces plaster of paris.
  6. Which of the following has sodium bicarbonate as its main constituent?
  7. __________ is produced using Polycondensation reaction.
  8. Out of the following processes of paper pulp manufacture, the maximum corrosion problem in digestion…
  9. In an integrated steel plant, NH3 present in coke oven gas is normally recovered as
  10. Main constituents of cotton fiber is
  11. A mineral is termed as 'ore', if
  12. Plasticisers are added to synthetic plastics to
  13. The terminology 'BTX' used in coal tar distillation industry refers to
  14. Liquor poisoning generally occurs due to the presence of __________ in it.
  15. Air used in aerobic fermentation must be sterilized, otherwise the
  16. Which of the following is not a pyrite ore?
  17. Varnish does not contain
  18. Low temperature carbonisation of coal takes place at __________ °C.
  19. At very high concentration of enzymes, the rate of fermentation chemical reaction is __________ the…
  20. In Kraft process of paper manufacture, white cooking liquor consists of caustic soda
  21. Diaphragm electrolytic cell as compared to mercury electrolytic cell
  22. Enzymes are
  23. Esterification reaction
  24. Raw materials for 'Solvay Process' for manufacture of the soda ash are
  25. Chloramines are used in water treatment for
  26. Use of water having dissolved oxygen in boilers promotes
  27. Vulcanisation of rubber
  28. Frasch process is for
  29. White phosphorous is stored under water, because
  30. Higher viscosity index of a lubricating oil denotes