What will happen if all gravity would be gone from the universe ?

Dear student,
Please find below the answer:

Zero gravity literally refers to the complete absence of gravity. In such a case Weightlessness arises.

• Physical processes that depend on the weight of a body (like convection, cooking water or burning candles) will act differently without a certain amount of gravity.
• Cohesion and advection play a big role in space.
• Everyday work like washing or going to the bathroom will not possible.
• To use toilets in space, like the one on the International Space Station, one would have to fasten themselves to the seat.
• A fan will create a suction that will carry the waste away.
• Drinking will be aided with a straw or from tubes.

Hope this clears your doubt.
Regards.