The fact that Fahrenheit 451 by Ray Bradbury, a book about banning books.
has itself been banned in a few schools is an example of which of the
following types of irony?
verbal
dramatic
situational
neither

Answer is most likely situational irony.

For reference, here is the definition of situational irony: irony involving a situation in which actions have an effect that is opposite from what was intended, so that the outcome is contrary to what was expected.

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invention of the washing machine

in the past, people used sticks and stones or scrub boards to clean their clothing. as it was sweaty, backbreaking work, we owe a world of to james king because he created the model for the modern washing machine in 1851. the most important issue was that this machine cleaned clothes while a person cranked the handle. doing this made people who used it develop strong muscles in their arms. later, in 1908, alva j. fisher created an electric washing machine named thor. this one was not the first automatic washing machine. however, it was one of the most popular models at the time.