Unity Development Quiz

What is the purpose of the DontDestroyOnLoad() method in Unity?

• It prevents a GameObject from being destroyed when a new scene loads.

• It makes a GameObject immune to collisions.

• It prevents a GameObject from being affected by physics.

• It keeps the GameObject at a fixed position.

How do you properly implement a coroutine in Unity?

• Use async and await keywords.

• Call the method normally in Update().

• Use StartCoroutine(MyCoroutine()).

• Use InvokeRepeating().

What does Time.deltaTime represent in Unity?

• The total time since the game started.

• The time it takes for one physics update.

• The time elapsed between frames.

• The time elapsed in real-world seconds.

Which of the following best describes a Unity Prefab?

• A GameObject that is stored as an asset and can be reused.

• A script that controls the physics of a GameObject.

• A UI element for organizing GameObjects.

• A GameObject that cannot be instantiated at runtime.

What is the best way to handle player input in Unity for multiple platforms?

• Using Input.GetKey() directly.

• Using Unity’s Input System package.

• Checking input in FixedUpdate().

• Using Input.GetAxisRaw() only.

What is the correct way to apply force to a Rigidbody in Unity?

• rigidbody.velocity = new Vector3(0, 10, 0);

• rigidbody.MovePosition(transform.position + Vector3.up * 10);

• rigidbody.AddForce(new Vector3(0, 10, 0), ForceMode.Impulse);

• rigidbody.transform.position += Vector3.up * 10;

In Unity, what is the difference between OnTriggerEnter() and OnCollisionEnter()?

• OnTriggerEnter() is called for all collisions.

• OnCollisionEnter() requires at least one Rigidbody.

• OnTriggerEnter() requires the GameObject to have a MeshRenderer.

• OnCollisionEnter() only works with UI elements.

How do you ensure a script runs before others in Unity?

• By placing the script at the top of the hierarchy.

• By using DontDestroyOnLoad().

• By setting the script execution order in Project Settings.

• By calling Awake() multiple times.

What is the role of the FixedUpdate() method in Unity?

• It is called every frame, like Update().

• It is used for physics calculations.

• It only runs once when the object is created.

• It is used for rendering updates.

What happens if you call Destroy(gameObject); inside OnCollisionEnter()?

• The object is destroyed immediately.

• The object is destroyed at the end of the frame.

• The object remains active until the next scene loads.

• The object is disabled but not removed.