Here's how these types of questions work:
* They start with "What" or "Which" followed by an adjective. For example:
* What color is the sky?
* Which book is your favorite?
* The adjective modifies a noun that is implied in the question. For example:
* "What color is the sky?" The implied noun is "color."
* "Which book is your favorite?" The implied noun is "book."
Here are some examples of adjective questions:
* What kind of music do you like?
* How tall is the building?
* How old are you?
* What size shoes do you wear?
* Which team is playing today?
Note: While adjective questions are a common way to describe things, they aren't the only way to ask questions about adjectives. You can also use questions that directly ask about an adjective's property, like:
* What is the color of the sky?
* What is the size of the shoes you wear?
Ultimately, the best way to phrase your question depends on the specific information you're trying to get.