To solve this we must be knowing each and every concept related to experiment. Therefore, the correct option is option A that is to leave the room and go to an area with fresh air.
Any procedure where measurements are taken and tests are run to support or disprove a hypothesis is referred to as a scientific experiment.
A science class is conducting an experiment that produces noxious fumes. Because of inadequate ventilation, some students begin to feel nauseated and dizzy. The first response should be to leave the room and go to an area with fresh air.
Therefore, the correct option is option A that is to leave the room and go to an area with fresh air.
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Answer : The correct option is, (1) ions.
Explanation :
According to the Arrhenius concept, an acid is a type of substance which ionizes in water to gives ions (hydronium ions or hydrogen ions) and a base is a type of substance which ionizes in water to gives ions (hydroxide ions).
As we know that KOH is a base which ionizes in water to gives ions (hydroxide ions) and ions.
Hence, potassium hydroxide is classified as an Arrhenius base because KOH contains ions.