Interrogative pronouns in English Grammar

Here is the list of interrogative pronouns

1. who - Who refers to person or people
2. whom - 
3. whose
4. what - What refers to non-living things or abstracts. 
5. which  -  which is generally used when choice is available. We can also use which one and which ones while asking questions.

Examples on Interrogative Pronouns

1. Who is my partner?
2. Whom should I ask this query to?
3. Whose book is this?
4. What is your daily routine?
5. Which book do you want to borrow?

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