Hi Trivender, I think it is OK in terms of no one will find it a problem.
But the demo installation is cleaned every 24h, which means your solutions get lost. So I don't think it makes sense to use it for this. Because your link to the solution will work maximum 24h.
Help us to help you!
Provide your LS version and where it is installed (own server, uni/employer, SaaS hosting, etc.).
Always provide a LSS file (not LSQ or LSG).
Note: I answer at this forum in my spare time, I'm not a LimeSurvey GmbH employee.