Home » Chemistry mcqs » In pickling and etching _________ acids are usedIn pickling and etching _________ acids are used by a) Sulphuric acid b) Hypo chlorous acid c) Phosphoric acid d) Phosphorous acid Related Posts:Sperms are _________ in origin.The arrangement of _________ speaks of the division…Deoxygenated blood first enters in _________ part in fishes?
