Asked in ETEA MDCAT 2015 2015Moderate

Select cresol out of the following benzene derivatives?

Correct answer: D. Option D

  • A. Option A
  • B. Option B
  • C. Option C
  • D. Option D

Explanation

Cresol is a derivative of benzene that has a methyl group CH3 and a phenol group OH attached to the benzene ring.Ortho-Cresol, also called 2-methylphenol, or 2-hydroxytoluene, is an organic compound with the formula CH₃C₆H₄. It is a colourless solid that is widely used intermediate in the production of other chemicals. It is a derivative of phenol and is an isomer of p-cresol and m-cresolMetacresol (m-cresol or 3-methyl phenol) is a colorless, yellowish liquid. It is used as a bactericide for control of crown gall and olive knots on certain fruit and nut trees and ornamentals and the genetic/physiological disorder burr knot on apples.Para-Cresol, also 4-methylphenol, is an organic compound with the formula CH₃C₆H₄. It is a colorless solid that is widely used intermediate in the production of other chemicals. It is a derivative of phenol and is an isomer of o-cresol and m-cresol.

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About Benzene and Aromatic Compounds

Benzene has a planar ring of delocalised π electrons, giving aromatic stability and equal carbon-carbon bond lengths. The topic covers resonance, electrophilic substitution reactions such as nitration, halogenation, sulphonation and Friedel-Crafts reactions, along with substituent effects and the distinction between substitution in benzene and addition in ordinary alkenes.

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