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Class 12ChemistryGeneral Principles and Processes of Isolation of ElementsMix Examples of General Principles and processes of Isolation of Elements
Medium

Which of the following is an incorrect match?

  • A
    Purification of $Al$ metal : Baeyer's method
  • B
    Polling : Reduction of $Cu_2O$
  • C
    $FeCr_2O_4$ (chromite ore) : $NaOH/Na_2CO_3$
  • D
    $Ag$ : Mac Arthur cyanide process
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Class 12 Questions

Class 12

Chemistry Questions

Chapter

General Principles and Processes of Isolation of Elements

Subtopic

Mix Examples of General Principles and processes of Isolation of Elements

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Select the incorrect statement.

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Correctly match the List-$I$ with List-$II$:
List-$I$ List-$II$
$(P) \ [M(CN)_2]^-$ $(1) \ Ni$ (during refining of metal)
$(Q) \ [M(CO)_4]$ $(2) \ Ti$ (during refining of metal)
$(R) \ MI_4$ $(3) \ Pb$ (during roasting of ore)
$(S) \ MO$ $(4) \ Ag$ (during leaching of ore)

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By annealing,steel

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Match the alloys in Column $A$ with their uses in Column $B$:
Column $A$ Column $B$
$(1)$ Stainless steel $(a)$ Riveting
$(2)$ Bronze $(b)$ Making artifacts
$(3)$ Nitinol $(c)$ Making coins
$(4)$ German silver $(d)$ Making musical instruments
$(e)$ Making surgical instruments

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Which one of the following statements is incorrect?

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