does all statements must be true in a true or false question
no
they can be true, false, sometimes true, sometimes false.
In a true or false question, typically called a binary question, there are two possible answers: true (T) or false (F). The purpose of such a question is to determine the accuracy or validity of a specific statement or proposition. In this type of question, only one statement should be provided, and it should be marked either true or false.
To answer a true or false question correctly, you need to evaluate the statement and determine its accuracy. If the statement is factually correct and aligns with the given information or general knowledge, you would mark it as true (T). If the statement is incorrect or contradicts the given information or general knowledge, you would mark it as false (F).
In summary, a true or false question refers to a question that requires you to determine the accuracy of a single statement. Whether the statement is true or false depends on its alignment with the given information or general knowledge.