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IIT JEE Chemistry Of Heavier Metals

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1. Which of the following alloys of iron contains highest percentage of nickel?




2. Brass is an alloy of




3. During electrorefining of copper gold may be recovered from




4. Which of the following alloys of steel contains highest percentage of nickel? .




5. Zinc oxide is




6. The percentage of carbon is least in




7. Which of the following metals does not react with chlorine? None of these.




8. Which of the following compounds is soluble in water?




9. Which of the following elements does not exhibit any oxidation states involving d-electrons?




10. Commercially important ore of lead is




11. Iron is protected from rusting by coating it with a thin layer of




12. Fineness is the term used to express purity of




13. In the manufacture of steel from pig iron the following is used




14. Calamine is an ore of




15. Which of the following metals may be present in the anode mud during electrorefining of copper? I. Gold II. Iron III. Silver IV. Magnesium.




16. Bronze is an alloy of copper and




17. Which of the following metals on reaction with hot solution of sodium hydroxide dissolves and liberates hydrogen gas?




18. 18 carat gold contains




19. Argyrol is used as mild antiseptic and germicide. It is a colloidal solution of




20. The oxide ore of zinc is




21. Which of the following statements is not correct?




22. The most stable oxidation state of copper is




23. 90% pure silver has fineness




24. Quick silver is




25. Which of the following metals occurs in nature in combined as well as in native state?




26. Quenched steel is None of these.




27. Which of the following is used as antacid in medicines?




28. Which of the following salts is hexahydrate?




29. Silver chloride is soluble in




30. Which of the following metals exhibits variable valency due to inert pair effect?




31. Which of the following sulphides is black in colour ?




32. The percentage of carbon in steel is in the range




33. Which of the following salts is heptahydrate?




34. During extraction of iron the flux used is




35. Which of the following statements about ferric chloride is not correct?




36. Which of the following elements is present in hemoglobin?




37. In the metallurgy of iron the lime stone addedremoves calcium ions as




38. Photographic films and plates have an essential ingredient of




39. Cyanide process is used for the extraction of




40. Which of the following metals has maximum density?




41. Which one of the following is an ore of silver?




42. Mercury is transported in metal containers made of




43. Parting is the process associated with the purification of




44. During extraction of iron, obtained at the bottom of blast furnace is known as