The only one of those five that I took is Analyzing & Interpreting Literature, and I would actually call it one of the easier exams. Others have said that World Religions is pretty easy too. But Rise & Fall of the USSR, from everything I've heard, is definitely one of the toughest, and the other two Literature exams are plenty tough too.

But when it all comes down, any exam is easy enough if you know the material, and plenty difficult if you don't.

-Gary-