Q.Tropical hibiscus
Is there any difference in the care of a reg. hibiscus and a tropical hibiscus? How much sunlight should it have?

There is a difference in care requirements for hardy or tropical Hibiscus.
Wintering over is the biggest difference.
Here are some articles that will help with plant information and care requirements.
https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/how-to-care-for-hibiscus-plants.htm
https://www.gardeningknowhow.com/ornamental/shrubs/rose-of-sharon/rose-of-sharon-bush.htm
https://www.extension.iastate.edu/newsrel/2002/aug02/aug0242.html