This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
All of the following are used in disinfection of faeces, EXCEPT: 
Select and explain. 
A. Cresol, B. Formalin, C. Glutaraldehyde, D. Bleaching powder
C: Glutaraldehyde
Answer: C: Glutaraldehyde 
Explanation: Agents used for disinfecting faeces: DISINFECTANT % USED Bleaching powder 5 Phenol 10 Cresol 5 Formalin 10 Ref: Park 21st edition, page 119.