<prompt> The most potent topical corticosteroid is -Betamethasone valerateTriamcinolone acetonideHydrocortisone acetateClobetasol propionate  <response>: Ans. is d i.e., Clobetasol propionate Classification of topical steroids based on potencyClass 1Super potentClobetasol propionate ointment and cream 0.5 Betamethasone dipropionate ointment 0.05 Halobetasol propionate ointment and cream 0.05Class 2Highly potentMometasone furoate ointment 0.1Class 3PotentBetamethasone dipropionate cream 0.05 Fluticasone propionate ointment 0.05Class 4Moderately potentFluocinolone acetonide ointment 0.025 Fluticasone propionate cream 0.05 Mometasone furoate cream 0.1Class 5Moderately potentBetamethasone valerate cream 0.1 Hydrocortisone butyrate cream 0.1Class 6Mildly potentDesonide cream 0.05 Fluocinolone acetonide solution 0.05Class 7Least potentDexamethasone cream 0.1 Hydrocortisone 1 