Mercury
Acetone
Petrol
Kerosene
Answer is Wrong!
Answer is Right!
The answer is A. Mercury.
Mercury is a metal, while the other options are all liquids. Mercury is also the only option that is a liquid at room temperature.
Acetone is a colorless, flammable liquid that is used as a solvent and a paint thinner. It is also used in nail polish remover.
Petrol is a flammable liquid that is used as a fuel in cars and other engines. It is also known as gasoline.
Kerosene is a flammable liquid that is used as a fuel in jet engines and other engines. It is also known as paraffin oil.