Explanation: In English grammar, the phrase "most of" is used to indicate a large part or majority of something. It is often used with a noun to specify a significant portion of a whole. For example, "Most of the students passed the exam" means that a large number of students passed, but not all of them.
In the given sentence, "..... Delhi was without electricity last night," the phrase "most of" is appropriate to indicate that a large part of the city experienced a power outage. The correct sentence would be "Most of Delhi was without electricity last night."
The phrase "most of" is necessary because it specifies that a significant portion of Delhi was affected, not the entire city. If the sentence were to say "Most Delhi was without electricity last night," it would be grammatically incorrect because "most" alone does not indicate a part of a whole. The preposition "of" is required to complete the phrase and make it grammatically correct.
Understanding the usage of "most of" is important in English grammar, especially in contexts where a significant portion of a whole is being referred to. This concept is often tested in various competitive examinations such as UPSC, SSC, Bank PO, CLAT, and MAT, where grammatical accuracy is crucial.
In summary, the correct answer is "Most of" because it accurately indicates that a large part of Delhi was without electricity last night, adhering to the rules of English grammar and usage.