Pediatrics All India exam 188bd6b2 What is the IQ of an imbecile? A 70-80 B 50-69 C 20-49 D 0-20 High-Yield Explanation Categorical classification of mental retardationCategory I.Q.Moron50-90Imbecile20-49Idiot<20(Refer: Nelson's Textbook of Pediatrics, SAE, 1st edition, pg no. 51)