Interrogative Adjectives: Definition, Examples, Rules and Exercises

Have you ever asked, ‘Which book should I read?’ or ‘Whose jacket is this?’ If yes, you have already used an interrogative adjective. Interrogative adjectives are special question words that work alongside nouns to help us ask meaningful, specific questions. They are one of the most commonly used grammar tools in both spoken and written English, yet many of you confuse them with interrogative pronouns or adverbs.

In this article, you will find a complete guide to interrogative adjectives, their definition, a full list, real-life examples, rules for usage, key differences from related grammar concepts and practice exercises to test your understanding.

Table of Contents

• What is an Interrogative Adjective?
• List of Interrogative Adjectives
• How to Use Each Interrogative Adjective
• Rules for Using Interrogative Adjectives
• Interrogative Adjectives Examples
• Difference Between Interrogative Adjective and Interrogative Pronoun
• Difference Between Interrogative Adjective and Interrogative Adverb
• Interrogative Adjectives Exercises

What is an Interrogative Adjective?

An interrogative adjective is a word that modifies or describes a noun and is used to ask a question. In simple terms, it is a question word placed directly before a noun to inquire about identity, choice, or ownership.

Interrogative Adjective Definition

A word that qualifies a noun in the context of a question and asks for specific information about that noun. They help us ask questions about the ownership, choice, type, or identity of a noun. Common interrogative adjectives are what, which and whose. 

Examples:

• What colour do you like?

• Which team won the match?

• Whose notebook is on the desk?

 

List of Interrogative Adjectives

Here is the list of interrogative adjectives commonly used in English grammar:

 

How to Use Each Interrogative Adjective

Understanding when to use ‘what,’ ‘which,’ and ‘whose’ correctly is important for both grammar and everyday communication. 

Using ‘What’

‘What’ is used when a question is open-ended, meaning you are not choosing from a known or limited set of options. It is used for general inquiries about type, kind, or nature.

Structure: What + noun + rest of the sentence?

Examples:

• What career are you planning to pursue?

• What language do they speak at home?

• What kind of movie interests you?

Using ‘Which’

‘Which’ is used when a question refers to a specific or limited number of options. The choices are usually already known or implied.

Structure: Which + noun + rest of the sentence?

Examples:

• Which bus goes to the railway station?

• Which player was awarded the Man of the Match?

• Which chapter will the exam cover?

Using ‘Whose’

‘Whose’ is used to ask about ownership or possession. It is the possessive form of ‘who’ and is used as an interrogative adjective.

Structure: Whose + noun + rest of the sentence?

Examples:

• Whose report got the highest marks?

• Whose bicycle is parked in the corridor?

• Whose plan did the committee approve?

 

Rules for Using Interrogative Adjectives 

To use interrogative adjectives correctly, keep these rules in mind:

Rule 1: Interrogative adjectives are always followed by a noun.

Incorrect: Book which did you borrow?

Correct: Which book did you borrow?

Rule 2: The interrogative adjective must directly modify a noun.

If the interrogative adjective stands alone (without a noun following it), it becomes an interrogative pronoun, not an adjective.

Rule 3: Interrogative adjectives do not change form based on gender, number, or tense.

‘Which’, ‘what’, and ‘whose’ remain the same regardless of whether the noun is singular, plural, masculine, or feminine.

Rule 4: They can appear in both direct and indirect questions.

Direct: What time is the flight? 

Indirect: She asked me what time the flight was.

 

Interrogative Adjectives Examples

Here are examples of interrogative adjectives used in various types of sentences to help you understand their usage better:

• What food do you prefer for breakfast?

• What type of music does she listen to?

• What colour is the new car?

• What time does the library open?

• What subject are you studying this semester?

• Which book did the teacher recommend?

• Which direction should we turn at the junction?

• Which candidate got the most votes?

• Which flavour of ice cream do you want?

• Which laptop is more suitable for design work?

• Whose umbrella is this?

• Whose handwriting is the neatest?

• Whose turn is it to present?

• Whose car is parked outside?

• Whose idea was this project?

 

Difference Between Interrogative Adjective and Interrogative Pronoun

Interrogative adjectives and interrogative pronouns are two concepts in English that people often confuse. The main difference between them is based on how the question word is used in the sentence. 

To identify whether it is an interrogative adjective or an interrogative pronoun, always check the following:

• If a noun comes immediately after the question word, it is an interrogative adjective.

• If the question word stands alone without a noun, it is an interrogative pronoun.

 

Difference Between Interrogative Adjective and Interrogative Adverb

Interrogative adjectives and interrogative adverbs are both used to ask questions, but they perform different functions within a sentence. Interrogative adjectives modify nouns, while interrogative adverbs modify verbs, adjectives, or other adverbs. Interrogative adverbs usually ask questions about time, place, reason, or manner.

To identify whether it is an interrogative adjective or an interrogative adverb, always check the following:

• If the question word is followed by a noun, it is usually an interrogative adjective.

• If the question word asks about time, place, reason, or manner without modifying a noun, it is an interrogative adverb.

 

Interrogative Adjectives Exercises

Exercise 1: Fill in the Blanks

Choose the correct interrogative adjective to complete each sentence.

1. __________ colour would you like for your room?

2. __________ students were selected for the scholarship?

3. __________ jacket is lying on the bench?

4. __________ chapter does this question come from?

5. __________ car did you park in my spot?

Answers: 

1. What 

2. Which

3. Whose

4. Which

5. Whose

Exercise 2: Identify the Interrogative Adjective

Underline the interrogative adjective in each sentence and identify the noun it modifies.

1. What career path are you considering?

2. Which train arrives first at the platform?

3. Whose presentation did the panel appreciate?

4. What type of fuel does this engine use?

5. Which candidate secured the highest votes?

Answers: 

1. What career path are you considering?

2. Which train arrives first at the platform?

3. Whose presentation did the panel appreciate?

4. What type of fuel does this engine use?

5. Which candidate secured the highest votes?

Exercise 3: Identify Whether it is Interrogative Adjective or Pronoun

1. Which is your favourite?

2. Which colour do you prefer?

3. Whose is this notebook?

4. Whose notebook is this?

5. What do you want?

Answers:

1. Interrogative pronoun

2. Interrogative adjective

3. Interrogative pronoun

4. Interrogative adjective

5. Interrogative pronoun