Question

In ultimate analysis, %carbon is given by __________

(a) (Increase in weight of KOH tube×12×100 / weight of coal sample taken×44)

(b) (Increase in weight of KOH tube×2×100 / weight of coal sample taken×18)

(c) (Increase in weight of CaCl2 tube×12×100 / weight of coal sample taken×44)

(d) (Increase in weight of CaCl2 tube×2×100 / weight of coal sample taken×18)

This question was addressed to me by my school principal while I was bunking the class.

I need to ask this question from Analysis of Coal in portion Fuels and Combustion of Engineering Chemistry II

Answer 1

Correct option is (a) (Increase in weight of KOH tube×12×100 / weight of coal sample taken×44)

The explanation is: %C = (weight of carbon/weight of coal sample taken) ×100

In the ultimate analysis of coal,

%C = (Increase in weight of KOH tube×12×100 / weight of coal sample taken×44).