Question Detail

MIC 121 LaboratorySafety andEthicsin Microbiology Objective Question

Question

Which disinfection method is rapid and effective against vegetative bacteria, fungi, and most enveloped viruses, but is specifically noted as NOT sporicidal and highly flammable?
Options
A 1% Sodium Hypochlorite (Bleach)
B Dry Heat (160°C / 2 h)
C 70% Ethanol
Correct Answer
D Autoclaving (121°C, 15 psi)
Correct Answer

Option C is the correct answer.

Detailed Explanation

The 'Sterilisation and Disinfection Methods' section describes '70% Ethanol' as 'Rapid; effective against vegetative bacteria, fungi, most enveloped viruses. NOT sporicidal. Highly flammable - keep away from open flames.'

Hint

The question highlights both effectiveness and key limitations like flammability and inability to kill spores.

Question Info