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4. d and f- block elements — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistry4. d and f- block elements1 Mark
MCQ
Gun metal is an alloy of
  • A
    $Cu$ and $Al$
  • ✓
    $Cu,\,Sn$ and $Zn$
  • C
    $Cu,\,Zn$ and $Ni$
  • D
    $Cu$ and $Sn$
✓

Answer

Correct option: B.
$Cu,\,Sn$ and $Zn$
b
(b)$Cu = 88\%$,  $Sn = 10\%$,  $Zn = 2\%$,  $Pb = 0.5\% $ $\to$ Gun Metal

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