Ooch ronsis is fou nd in -: (A) Alkaptonuria, (B) Tyrosinemia, (C) Phenylketonuria, (D) Homocystinuria
Answer is A. Ans. is 'a' i.e., Alkaptonuria Alkaptonuriao Deficiency of homogentistic acid oxidase.o Accumulation of homogentistic acid|Destruction of connective tissue|Deposition of black pigment in the sclera ear, nose cartilase, (oochronsis).o Urine become dark on standing.