The questions in long forms and surveys can massively impact your response rate. In general, the more questions, the lower the response or conversion rate tends to be. I rarely fill in any surveys if there are more than 5 questions.
Long Forms For Higher Response Rate
Still, there are cases when you need to ask vnpay database for more information, e.g. for capturing medical and health details, for applications, questionnaires, quizzes. But the point is, how you're going to pull your customer's attention to take time to fill every form field.
There are a number of things you do to improve long forms for better user experience and higher conversions:

1. Use multi-step forms
Long Form Question
Instead of using a long single-step form, build a multi-step form where you can group your questions into bite-sized chunks. You can also use a progress bar on top of the form to provide clarity on how many steps the user still needs to complete.
Every industry utilizes multi-step forms, whether it’s to capture a lead, collect data or facilitate registration. Especially online forms in the healthcare industry require dozens of field entries, you need to streamline the way you collect information.
Multi-step forms can make a big difference as they are so much more intuitive and lean vs. long forms that overwhelm the users with too much information.