React useReducer Hook MCQ useReducer Practice Questions

Direction: Choose the correct option

What is the useReducer hook typically used for?

A. Creating refs

B. Optimizing performance

C. Handling side effects

D. Managing complex state logic with multiple sub-values

Direction: Choose the correct option

What does useReducer return?

A. The current state and a dispatch function

B. The state and a setter

C. A reducer object

D. An array with state and reducer

Direction: Choose the correct option

What is the role of the reducer function in useReducer?

A. It renders the component

B. It specifies how the state changes in response to actions

C. It handles side effects

D. It initializes state

Direction: Choose the correct option

Which action object property is conventionally used to describe the type of update?

A. action

B. type

C. name

D. payload

Direction: Choose the correct option

When might you prefer useReducer over useState?

A. When you have deep updates

B. When next state depends on previous state

C. When state logic is complex and involves multiple sub-values

D. All of the above

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