Test: Characteristics of Phenols - NEET MCQ

Baking powder is a mixture of baking soda NaHCO₃,(sodium hydrogen carbonate)and a mild edible acid such as tartaric acid. When baking powder mixes with water (form a king cake or bread), sodium hydrogen carbonate reacts with tartaric acid to evolve carbon dioxide gas.

The correct answer is option A

The correct answer is Option A.
Its IUPAC name is 3-methyl phenol.

The correct answer is option A
Phenolphthalein gives pink colour with alkali.

The correct answer is option C

Phenol heated with sulphuric acid gives phenol disulphonic acid, which further on reaction with nitric acid forms picric acid (2,4,6-trinitrophenol).

The -OH group is attached to more electronegative sp² hybridized carbon atom which decreases the electron density on oxygen and increases the polarity of O-H bond. This increases the ionization of phenol. Moreover, in the phenoxide ion, the negative charge is delocalized over ortho and para positions. Hence, phenoxide ion is more stable than phenol. This increases the acidity of phenol.

The correct answer is option A
P-methyl phenol is the major product.

 

Phenols respond to all the above mentioned tests except Schiff’s reagent test, which is shown by aldehydes.