What questions are typically asked during a Thailand tourist visa interview for Pakistani applicants?

I don't know what applying through a consultant is. Normally you must apply in person at the Thai embassy or consulate.

Your profile says Pakistan, so I'm assuming that you will be entering Thailand with a Pakistani passport. Pakistan does not qualify for Visa on Arrival or Visa Exempt, so you would need a tourist visa to enter the country. If you will be entering on a different passport please let us know so we can advise differently.

As Pakistan does not use the e-visa system to accept applications online, you would normally apply directly through the embassy.

Normal visa interviews around the world involve proving that you are only traveling for the purpose you applied for (tourism) and that you intend to leave Thailand within the time provided in the visa you applied for. This normally involves asking about family, work, business, home ownership, etc.