Differentiate between hard coke and soft coke.

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Solution

Dear student,

Coke is the non-volatile residue left in the retorts and used as a reducing agent.
Hard coke :- Hard coke is obtained by high temperature carbanisation.It is used in metallurgy as a metallurgical coke.
Soft coke :- Soft coke is obtained by high temperature carbanisation.It is used as a domestic fuel for making water gas and acetylene.Also it is obtained as a by-product in the manufacture of coal gas.

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Statements:

All bottles are cups.

Some bottles are cokes.

Conclusions:

I. All cokes being bottles is a possibility.

II. All cups can never be cokes.

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