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Chemical Bonding and Molecular Structure — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryChemical Bonding and Molecular Structure1 Mark
MCQ
Which is the correct order of decreasing reactivity of metals?
  • ✓
    $\ce{K > Na > Cu > Au}$
  • B
    $\ce{Na > Au > Cu > K}$
  • C
    $\ce{Cu > Na > K > Au}$
  • D
    $\ce{Au > Cu > Na > K}$
✓

Answer

Correct option: A.
$\ce{K > Na > Cu > Au}$
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Nomex : is a fire resistant nylon. Fire proof suits are made of nomex.
Kermel : is another fibre used as heat and flame protecting clothing.

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