Common Errors in Degrees of Comparisons

Wrong :  1. Rohit is not as tall as her.
                 (Objective Case)
Correct : 1.Rohit is not as tall as she is.
                  (Objective Case)

Wrong :  2. Ajay is not cleverer than me.
Correct: 2. Ajay is not cleverer than I (am) (Subject Position - Subjective Case))

Wrong.: 3. Shivaji was cleverer than brave.
Correct: 3. Shivaji was more clever than brave.
  (Two qualities of a same person take more instead of adding " -er )

Wrong: 4.Varun is one of the most intelligent boy
                 in the school.
Correct: 4.Varun is one of the most intelligent
                  boys in the class.

Wrong : 5.The population of Mumbai is larger
              than Kolkata.
Correct: 5.The population of Mumbai is larger
               than that of kolkata.