Browse Questions

# Passivity is exhibited by

$(1)\;Be\qquad(2)\;Mg\qquad(3)\;Al\qquad(4)\;B$

$(a)\;1,2\qquad(b)\;2,3\qquad(c)\;1,3\qquad(d)\;2,4$

$Be$ and $Al$ are rendered passive by chemical agents like conc.$HNO_3$
Hence (c) is the correct answer.