Misc: What sea creature squirts water from both holes when alarmed?

Questions

On which mountain near Troy did the Judgement of Paris in Greek Legend take place?

According to Hindu mythology which legendary mountain in the centre of the world was the abode of Indra the god of the sky?

When Edward Jennerfirst developed the vaccine for smallpox in 1796 from which animal disease did he produce the vaccine?

What does a wainwright make?

What is the name of the only private army in Britain?