How to Add a Picture Password to your Google Forms
Google Forms do not support the CAPTCHA by default, but this feature could be implemented in it through using the attached images used with the questions.
Steps to Add a Picture Password to your Google Forms:
And after reading this article you might have got about the method by which you could now easily set up the Picture Password or the CAPTCHAs for your Google Forms, and eventually, protect it up from being traced by the spams or the bots. You should pretend to use the method and apply the picture password so that your Google Forms account would remain clean and secure all the times and moreover contain the true forms filled up by the real users.