Perchloric rhymes with:
caloric, florek, lorek, lorick, borek, boric, caloric, choric, corrick, couric, doric, dysphoric, euphoric, florek, historic, jirik, lorek, lorick, meteoric, moric, norick, orick, orrick, prehistoric, roehrich, rohrich, rorick, siewiorek, sirek, stivoric, warrick, yorrick, zorich