Which of the following materials can be stored in cone roof tanks?

Cone roof tanks are specifically designed to store liquids that have low volatility and are not highly corrosive. These tanks are commonly used for substances that are stable and will not generate significant vapor pressure that could lead to dangerous conditions, such as flammable or toxic vapors.

Sodium hydroxide, a highly corrosive chemical, requires special consideration for its storage due to its highly reactive nature. However, it can be safely stored in tanks made of suitable materials that resist corrosion, and cone roof tanks can be designed with liners or coatings that adequately protect against corrosive substances in certain contexts.

The other materials listed—liquefied petroleum gas, kerosene, and water—have different properties that may make them less suitable for cone roof tanks. Liquefied petroleum gas, for example, is highly volatile and requires pressure-controlled environments for safe storage. Kerosene, while liquid and less volatile than LPG, can still produce vapors that necessitate more specialized containment to avoid risks. Water, while it does not present the same volatility, is often stored in different types of tanks designed for large volumes.

Thus, sodium hydroxide is the most appropriate choice among the options provided for storage in cone roof tanks, with the understanding that proper materials and