Final answer:
When toluene undergoes monobromination, the major organic products formed are ortho-bromotoluene and para-bromotoluene, with para-bromotoluene typically being the predominant product.
Step-by-step explanation:
The two major organic products obtained when toluene undergoes monobromination are ortho-bromotoluene and para-bromotoluene. During the monobromination process, a bromine atom replaces one of the hydrogen atoms on the benzene ring of toluene. Due to the presence of the methyl group (CH3) on the benzene ring, which is an activating and ortho/para-directing group, the bromination occurs predominantly at the ortho (2-bromotoluene) and para (4-bromotoluene) positions relative to the methyl group. The major product typically is para-bromotoluene because of steric hindrance at the ortho positions.