What is the low-temperature range maintained to activate charcoal?
(a) 100-200 Celsius
(b) 400-500 Celsius
(c) 800-900 Celsius
(d) None of the mentioned
The question was posed to me in an interview for internship.
The query is from Activation of Charcoal topic in division Industrial Applications of Fluidized Beds of Fluidization Engineering