Question

_______ is used for sterilizing metallic devices like needles, scalpels.

(a) Flaming

(b) Incineration

(c) Hot air oven

(d) Steam

This question was posed to me in a job interview.

I want to ask this question from Heat Transfer Applications in chapter Heat Transfer Applications of Food Processing Unit Operations

Answer 1

Correct answer is (a) Flaming

For explanation I would say: Flaming is used for sterilizing metallic devices like needles, scissors. Incineration is used particularly for inoculating loops used in microbe cultures. The hot air oven is appropriate for dry material like glass ware, powders and metal devices.