The tidal bore of which of the following rivers is known as 'Pororoca'?

Which of the following rivers forms international border?

Which one of the following rivers is the second longest river of the world?

Which of the following is not related to Asia?

At the mouth of which of the following rivers the 'bird's foot' type delta is formed?

At the mouth of which of the following rivers is a 'bird's foot' type delta formed?