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Electrometallurgy is not involved in the extraction of __________ from its ore.

A. Aluminium

B. Tin

C. Lead

D. Both (B) & (C)

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

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  2. Thermistors are used in __________ devices.
  3. Pick out the correct statement.
  4. Dowtherm is a
  5. Magnesium is present in
  6. Transition from laminar to turbulent zone in free convection heat transfer is governed by the critical…
  7. Which of the following is normally not found in both the S.I. (petrol) & C.I. (diesel) engines?
  8. The delivery pressure of boiler feed water pump compared to the boiler steam pressure is
  9. __________ property of steel increases by addition of large amount of silicon in it.
  10. What is the pH of distilled water?
  11. A material in which the atoms are arranged regularly in some directions but not in others, is termed…
  12. __________ has the highest melting point out of the following.
  13. Removal of non-condensable from steam or other vapour is termed as the __________ process.
  14. Surface tension of a liquid
  15. Which of the following is not an ore of copper?
  16. In a boundary layer developed along the flow, the pressure decreases in the downstream direction. The…
  17. An approximately __________ process exemplifies the flow of a gas through a very long pipe of uniform…
  18. The most important consideration, while designing the refrigeration system of an aircraft is that the…
  19. Which one is neutral in character?
  20. The minimum carbon content in steel should be __________ percent for it to respond to a hardening treatment.
  21. In inventory control theory, the economic order quantity (EOQ) is the
  22. Direct conversion of thermal energy to electrical energy is facilitated by the
  23. Steel produced from phosphatic iron is __________ in nature.
  24. Addition of __________ to steel does not help in improving its machinability.
  25. Which of the following materials has the poorest electrical conductivity?
  26. Square steel key is normally strong in failure by shear & crushing. Keys are normally made of __________…
  27. Leakage in a cooking gas cylinder is detected by
  28. Dryness fraction of dry steam is
  29. Thermal equivalent of electrical power in practical calculation is __________ kcal/kWh.
  30. A material is capable of resisting softening at high temperature, because of its property termed as