After storage, the strength of cement A. Decreases B. Increases C. Remains same D. May increase or decrease

The correct answer is: D. May increase or decrease.

The strength of cement is affected by a number of factors, including the type of cement, the curing conditions, and the storage conditions. In general, cement will increase in strength over time as it cures. However, if the cement is not stored properly, it can lose strength. For example, if the cement is exposed to moisture or extreme temperatures, it can weaken.

Here is a brief explanation of each option:

• A. Decreases. Cement can lose strength if it is not stored properly. For example, if the cement is exposed to moisture or extreme temperatures, it can weaken.
• B. Increases. In general, cement will increase in strength over time as it cures.
• C. Remains same. The strength of cement can remain the same if it is stored properly.
• D. May increase or decrease. The strength of cement can increase or decrease depending on the storage conditions.