React Controlled Components MCQ Controlled Components Practice Questions

Direction: Choose the correct option

What defines a controlled component in React?

A. The component uses refs

B. The component has its own internal state

C. The form data is handled by the DOM itself

D. The component's input value is controlled by React state

Direction: Choose the correct option

How do you set the initial value of a controlled input?

A. Setting the state in constructor or useState

B. Using defaultValue attribute

C. Using value attribute without onChange

D. Using placeholder

Direction: Choose the correct option

What is required for a controlled input to be editable?

A. A value attribute

B. A ref

C. An onChange handler that updates state

D. A name attribute

Direction: Choose the correct option

Given , what type of component is this?

A. Uncontrolled

B. Controlled

C. Ref-based

D. Stateless

Direction: Choose the correct option

What happens if you set value but no onChange on an input?

A. It ignores value

B. It becomes editable

C. It becomes read-only

D. It throws an error

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