Institution: জাতীয় কবি কাজী নজরুল ইসলাম বিশ্ববিদ্যালয় (JKKNIU) Exam: গ ইউনিট || জাতীয় কবি কাজী নজরুল ইসলাম বিশ্ববিদ্যালয় || 2012
Topic: Sentence (বাক্য), Subject: English Grammar (ইংরেজি গ্রামার)

Best Answer Explained in Below-:

The statement "He has done no wrong" contains several components, but the focus is on the word "wrong." In this context, "wrong" functions as a noun. Although the term can also act as an adjective (as in "wrong answer"), here it serves to indicate a moral or ethical wrongdoing, signifying the concept of an act that is considered incorrect or immoral. As a noun, it encapsulates the idea of wrongdoing itself, which can be quantified and explored as a subject of discussion, unlike adjectives, which merely describe qualities.

To further clarify, the sentence suggests that the individual in question has not engaged in any actions that can be classified as morally or ethically wrong. Therefore, "wrong" is the central noun that the sentence revolves around. The other parts of the sentence include "he," a pronoun representing the subject, and "has done," comprising the auxiliary and main verb, indicating the actions of the subject. Thus, due to its role in denoting a concept rather than describing a quality, "wrong" is correctly identified as a noun in this context.