Question

My favourite fruit is mango. (Change into the interrogative form)

Answer 1

Thanks for the question..

This is a very simple yet tricky riddle that involves mental aptitude.

My favourite fruit is mango

The interrogative form of above sentence is ----

"Is your favourite fruit mango?'

A bit of logic will easily solve it.

Hope it is helpful for you and solves your query too!.

Answer 2

My favorite fruit is mango (Given sentence)
My = Subject
Mango = Object
is = helping verb
Helping verb is to be written first. This helps in framing the question.
In this case, the subject 'my' changes to ''you'' because we don't question ourself.
The answer is
Is your favourite fruit mango?