1. Is it illegal to do freelancing when you work full time for any organization?
No
2. Is it ilegal to accept money as payment in crypto ?
It is not illegal, but it is not advisable to accept payment in crypto.
3. Is Moonlighting and freelancing same ?
No its not the same.
4. Is making more than one profile on any freelancing platform legal ?
It is not illegal, but it is not a good practise to do that.
5. I am in college now and want to do freelancing, will it create any problem for me at the time of placements ?
No, It will not create any sort of problem.