React State vs Props MCQ State vs Props Practice Questions

Direction: Choose the correct option

What is the main difference between props and state?

A. Props are for functions, state for classes

B. Props are read-only, state can be changed

C. Props are immutable, state is mutable

D. Props are internal, state is external

Direction: Choose the correct option

Which of the following can be changed by the component itself?

A. Neither

B. Both

C. State

D. Props

Direction: Choose the correct option

Are props passed from parent to child?

A. Only in class components

B. Yes

C. No

D. Only in functional components

Direction: Choose the correct option

If a parent component re-renders and passes new props, what happens to the child?

A. Child never re-renders

B. Child unmounts

C. Child may re-render depending on shouldComponentUpdate or memo

D. Child always re-renders

Direction: Choose the correct option

Which one is used to store data that may change over time within a component?

A. Refs

B. Props

C. State

D. Context

Quipoin Menu