Question

Coal and coke are the same
(A) True
(B) False

Answer 1

Hint: For comparing coal and coke, you can compare their respective ways of production and origin. Also you can compare their chemical and physical properties.

Complete step by step answer:
Coal:
It is a naturally occurring substance.
It has high volatile matter
It has high mechanical strength
It appears to be solid mass physically
It has high specific gravity in the range of $0.77$
Coke:
Artificially prepared from few impurities has high carbon content.
It contains relatively low volatile matter.
It has relatively low mechanical strength
It has porous physical appearance
It has relatively low specific gravity.
So, it is clear that coal is different from coke. Let us consider all the statements to prove that coke and coal are different.
Coal is produced from bituminous coal
Coke burns with no smoke whereas coal burns with smoke. Therefore, coke is better as a fuel than the bituminous coal itself.
Therefore, coke is used as a substitute for coal in domestic environments.
Water content in coke goes to zero at the end of the cooking process, but the coal contains water.
Coal is shiny black fossil fuel that contains impurities, emits smoke when burned and produces less heat than coke. Coke is dull, black byproduct of coal that burns hotter and cleaner.
So, the answer is false.

Note:
Coal is classified into four main types: anthracite, bituminous, sub bituminous and ignite. The ranking depends on the types and amounts of carbon.
Coal and coke is created by coking coal in a coke oven. Even though coal coke is produced slowly in a coke oven ($2.5$minutes per piece), it is highly effective fuel.