The inner lining of hot water geysers is made up of copper for several reasons. Option 1 states that copper has low heat capacity, which is incorrect because copper actually has a high heat capacity. Heat capacity refers to the amount of heat energy that a material can absorb before its temperature increases. Copper`s high heat capacity allows it to effectively absorb and transfer heat from the heating element to the water in the geyser.

Option 2 states that copper has high electrical conductivity, which is true. Copper is an excellent conductor of electricity, which is important in hot water geysers as they often have electrical components such as heating elements and thermostats. Copper`s high electrical conductivity ensures efficient transfer of electrical energy to heat energy, which then heats the water in the geyser.

Option 3 states that copper does not react with steam, which is the correct answer. Copper is resistant to corrosion and does not react with water or steam, making it an ideal material for the inner lining of hot water geysers. This ensures that the copper lining remains intact and does not degrade over time, resulting in a longer lifespan for the geyser.

Option 4 states that copper is a good conductor of both heat and electricity, which is true. Copper`s excellent