Необходимо задать 5 типов вопросов к одному предложению. Кто не знает - не отвечайте

These robots are called serial robots and often resemble the human arm

1. Общий

Are these robots called serial robots and resemble the human arm?

2. Альтернативный

These robots are called serial robots and resemble the human arm or head?

3. Специальный

Which robots are called serial and resemble the human arm?

4. К подлежащему  

Who is called a serial robot?

5. Разделительный

These robots are called serial robots, aren't they?