I want to display the all true/false questions in same page using quiz module. Is it possible?
Try using  Quiz Progress module .. It offers nice User Experience to track status of questions and navigation..
Project page says

Quiz 6.x has the limitation of displaying only one question at a time.
This makes it hard to navigate from one question to other especially
when you have a skipped question in the beginning and you have your
current question at the closure of quiz.
The &quot;Quiz Progress&quot; module tries to overcome this problem, it provides
a block that prints the list questions in the quiz referenced by title
or number (with tooltip) depends on the widget configured in module
settings, highlighting their status skipped, answered or unanswered as
a link.

Here is the final output using above module which lists all questions...

If you are looking for Solution from Quiz Module itself take a look at this issue in Quiz Module.. Seems like #106 works in above issue..