Question

For manufacturing of metallurgical coke which of the following properties a coal should have?

(a) Low volatile matter and high fixed carbon content

(b) High volatile matter and high fixed carbon content

(c) High volatile matter and low fixed carbon content

(d) Low volatile matter and low fixed carbon content

I have been asked this question in exam.

The origin of the question is Coal topic in section Fuels and Combustion of Engineering Chemistry II

Answer 1

Right answer is (a) Low volatile matter and high fixed carbon content

Easy explanation: Coal having low volatile matter burn with a short flame and have a good heating value due to which it is preferred and high fixed carbon content helps to burn a coal completely. High volatile matter produces long flames and has a low heating value.