The test is hard but my point was that while the immigrants who are applying for citizenship are expected to know the answers to these questions, average (native) Brits wouldn't. .. As proven by the mock test given to the 100 better-than-average educated collage tutors. I sincerely doubt that my neighbors know when Magna Carta was signed or when women over 30 were given the right to vote.
Sample tests: http://www.theuktest.com/life-in-the-uk-test/6