You surely will now, yes.
Not if the purpose of your visit is tourism. See link to FCO below.
It depends on what country they originally are from. You need to check with Immigration Canada and see if the country of origin is on the Visa required list.
No you don't need a visa to enter hong kong but to be safe, secure a return ticket and a hotel reservation.
No. You can enter for up to 30 days, more if you ask for a visa renewal. See http://www.roatanisland.net/tourist_tips.htm
No. All EU countries and Switzerland, can travel, work or just visit in the UK without a visa.
Niagara Falls is in NY, USA and in Canada. If you live in the US you do not need a visa to see it. If you want to cross the border from the US you will need documents including your passport.
Whether or not you need a visa to visit Goa depends on where you are from. If you live in another part of India you won't need one, but if you're coming from another country you may. Check the Indian regulations regarding visits to India from your country to see what applies to you.
Having UK residence visa has no effect on whether you need or not need Schengen visa. Switzerland is now part of the Schengen zone and is implementing the Schengen visa system. Your nationality (or your citizenship) determines whether you need Schengen visa to travel to Switzerland. See the Related links for a list of countries whose nationals are required to have Schengen visa when traveling to Switzerland.
Yes you need to. You may refer to http://www.kln.gov.my/files/Visa_Requirement_for_Malaysian.pdf
No visa required to France for Seychelles citizen. See link.
No, it is impossible you need a valid visa; see the link below.
Visa for Romania is not necessary to citizens from Malaysia; see the link below.