Which of the following is not used as a disinfectant?
(A) 1-2% Cetrimide (B) 100% Alcohol (C) 2% Lysol (D) 5% Chloroxylene
(B) A 70% solution of alcohol takes more time in evaporation from the surface, increasing the contact time. Therefore, 70% isopropyl alcohol is suitable for disinfection. 
100% isopropyl alcohol coagulates the protein instantly creating a protein layer that protects the remaining protein from further coagulation.