পাৰকীয়াপাৰক্ল`ৰেট
পাৰক্ল`ৰিক এছিড (Assamese)
1. Perchloric acid is a mineral acid with the formula HClO4. Usually found as an aqueous solution, this colorless compound is a stronger acid than sulfuric acid, nitric acid and hydrochloric acid. It is a... from wikipedia.org