'oil of winter green' is actually -
-
copper acetoarsenite
-
magnesium hydroxide
-
nitrohydrochloric acid
-
methyl salicylate
D
Correct answer
Explanation
Oil of wintergreen is chemically known as methyl salicylate, an ester commonly used in topical pain relief preparations and as a flavoring agent. The other options are incorrect compounds: copper acetoarsenite is a green pigment (Paris green), magnesium hydroxide is milk of magnesia, and nitrohydrochloric acid is aqua regia.