Final answer:
In kitchens, fire extinguishers using dry-cleaning solvents are not allowed because they are no longer considered safe or effective for the types of fires that typically occur in these settings.
Step-by-step explanation:
The type of fire extinguisher that is NOT allowed in kitchens is one that uses a certain dry-cleaning solvent. These solvents were once common in fire extinguishers, but they are no longer recommended for use. In kitchens, where fires often involve cooking oils and fats, a fire extinguisher with a fluorinated solution is preferable because it can spread across the burning surface and extinguish the fire. These foam-based extinguishers are now universally used to combat large-scale fires of organic liquids. Using old extinguishers with dry-cleaning solvents can pose a significant risk as they may not be effective on kitchen fires and might even exacerbate the situation due to the nature of foaming plastics when burned.