The correct order of density is
$Cu > Ni > Zn > Sc$
$Ni > Cu > Zn > Sc$
$Zn > Cu > Ni > Sc$
$Sc > Zn > Ni > Cu$
The term platforming is
Which of the following will give green hydrated ion
Which forms interstitial compounds?
Percentage of carbon in steel is
The catalyst used in the contact process is