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  4. Which of the following fraction of coal tar distillation is obtained at 270°-360°C ?

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Q. Which of the following fraction of coal tar distillation is obtained at $ 270^{\circ}-360^{\circ}C $ ?

Jharkhand CECEJharkhand CECE 2004

Solution:

[a] Light oil fraction is distilled upto $170^{\circ} C$. It has benzene, toluene and xylene.
[b] Middle oil fraction or carbolic oil fraction distills between $170-230^{\circ} C$. It has phenol and pyridine.
[c] Green oil or anthracene oil fraction distills between $270-360^{\circ} C$. It has anthracene and phenanthrene.
[d] Heavy oil distills between $230-270 \,K$. It has methyl and higher alkyl phenols.