Hydrogen peroxide is used in all of the following chemical tests for blood, EXCEPT:: (A) Benzedine test, (B) Phenophthalein test, (C) Ohotoluidine test, (D) Teichmann's test
Answer is D. Teichman's test uses Sodium chloride & glacial acetic acid; it doesn't use Hydrogen peroxide. All other test use Hydrogenperoxide, which acts as the oxidizing agent, the respective reagents produces a colored compound on coming in contact with blood stain. Ref: The Essentials of Forensic Medicine & Toxicology by K S Narayan Reddy, 27th Edition, Pages 394, 395