Palestinian Arabs are asked when Palestine was established, as well as follow-up questions like: What was the ancient capital? Who was the ruler? What was the currency? What was the flag?
The answers are as illuminating as they are varied.
Form your own conclusions. For me it is clear: a separate palestinian identity was only formed in recent times, after World War I, as a response to the increasing Jewish presence in the land (See my history series for more proof of this). And they are making up their history as they go along.
In contrast, if you ask Israelis similar questions regarding the history of the Jewish people in Israel, they will know, and there will be consistent answers.