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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?
Nickel steel
Stainless steel
Invar
Alnico.
2. Brass is an alloy of
Cu, Zn and Sn
Cu and Sn
Cu and Ni
Cu and Zn.
3. During electrorefining of copper gold may be recovered from
Electrolyte
Anode mud
Cathode
Cathode mud.
4. Which of the following alloys of steel contains highest percentage of nickel? .
stainless steel
Invar
Nickel steel
Permalloy
5. Zinc oxide is
Acidic
Basic
Neutral
Amphoteric.
6. The percentage of carbon is least in
Pig iron
Wrought iron
Steel
Cast iron.
7. Which of the following metals does not react with chlorine? None of these.
Copper
Silver
Gold
None of these.
8. Which of the following compounds is soluble in water?
AgCl
AgBr
Agl
AgF.
9. Which of the following elements does not exhibit any oxidation states involving d-electrons?
Copper
Zinc
Iron
Gold.
10. Commercially important ore of lead is
Galena
Siderite
Hematite
Sphaterite.
11. Iron is protected from rusting by coating it with a thin layer of
Mg
Ca
Zn
K.
12. Fineness is the term used to express purity of
Gold
Silver
Copper
Lead.
13. In the manufacture of steel from pig iron the following is used
Bessemer converter
Muffle furnace
Blast furnace
Carbon deduction.
14. Calamine is an ore of
Lead
Zinc
Tin
Mercury
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.
I and II
II and IV
I and III
III and IV
16. Bronze is an alloy of copper and
Tin
Zinc
Nickel
Tin and zinc.
17. Which of the following metals on reaction with hot solution of sodium hydroxide dissolves and liberates hydrogen gas?
Hg
Ag
Fe
Zn
18. 18 carat gold contains
60% gold
18% gold
75% gold
80% gold
19. Argyrol is used as mild antiseptic and germicide. It is a colloidal solution of
Hg
Ag
Au
As
20. The oxide ore of zinc is
Calamine
Zinc Blende
Zincite
Cassiterite.
21. Which of the following statements is not correct?
Wrought iron is ductile, soft and malleable
Anneabled steel is soft
Tempering increases the hardness of steel
Hardness of steel increases with increases in carbon content.
22. The most stable oxidation state of copper is
Cu (I)
Cu (II)
Cu (III)
Cu (IV).
23. 90% pure silver has fineness
9
18
900
90
24. Quick silver is
Ag
Hg
Sn
Pb.
25. Which of the following metals occurs in nature in combined as well as in native state?
Zinc
Gold
Mercury
Silver
26. Quenched steel is None of these.
Hard
Brittle
Both of the above
None of these.
27. Which of the following is used as antacid in medicines?
Milk of magnesia
Milk of lime
Lime water
Baryta.
28. Which of the following salts is hexahydrate?
Blue vitriol
Green vitriol
White vitriol
Mohrs salt.
29. Silver chloride is soluble in
Ammonia
Sodium thiosulphate
Potassium cyanide
All of the above.
30. Which of the following metals exhibits variable valency due to inert pair effect?
Iron
Lead
Mercury
Copper.
31. Which of the following sulphides is black in colour ?
MnS
CdS
CoS
ZnS.
32. The percentage of carbon in steel is in the range
3 - 5%
2 - 3%
1 - 2%
0.1 - 1.5%.
33. Which of the following salts is heptahydrate?
Green vitriol
Mohrs salt
Blue vitriol
Ferric alum.
34. During extraction of iron the flux used is
Silica
Calcium silicate
Lime stone
Coke.
35. Which of the following statements about ferric chloride is not correct?
It is a covalent compound
It sublimes on heating
Its aqueous solution is basic
Anhydrous ferric chloride is dimmer.
36. Which of the following elements is present in hemoglobin?
Mg
Fe
Cu
Zn.
37. In the metallurgy of iron the lime stone addedremoves calcium ions as
Slag
Gangue
Metallic calcium
Calcium carbonate
38. Photographic films and plates have an essential ingredient of
Silver nitrate
Silver bromide
Sodium chloride
Oleic acid.
39. Cyanide process is used for the extraction of
Agt
Cu
Au
Both (a) and (c).
40. Which of the following metals has maximum density?
Iron
Copper
Silver
Gold.
41. Which one of the following is an ore of silver?
Argentite
Azurite
Cassiterite
Cerussite.
42. Mercury is transported in metal containers made of
Silver
Lead
Iron
Aluminium.
43. Parting is the process associated with the purification of
Gold
Silver
Copper
Mercury.
44. During extraction of iron, obtained at the bottom of blast furnace is known as
Steel
Wrought iron
Cast iron
None of these.
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