Explanation

The Passive Voice of Interrogative Sentence of Present Indefinite Tense can be made by applying the following procedure:

Use helping verb is/are/am according to subject of Passive Voice sentence.

Convert the object of Active Voice Sentence into the subject.

Use the 3rd form of verb.

Then add the word “by”, in order to show the doer.

Then convert the subject of Active Voice Sentence into the object.

After that put the remaining words if there are any in Active Voice of Interrogative Sentence.

At the end use the sign of interrogation”?”, in order to show the interrogative nature of the sentence.