The correct answer is C. 7 days.
Lime mortar is a type of mortar that is made from lime, sand, and water. It is a traditional type of mortar that has been used for centuries. Lime mortar is a slow-curing mortar, which means that it takes several days to cure completely. The normal curing period for lime mortar is 7 days. However, the curing time can vary depending on the type of lime used, the amount of water used, and the environmental conditions.
Lime mortar is a versatile material that can be used for a variety of applications, including bricklaying, stonework, and plastering. It is a strong and durable material that is resistant to weathering and water damage. Lime mortar is also a sustainable material that is made from natural ingredients.
Here is a brief explanation of each option:
- Option A: 1 day. This is not the correct answer because the normal curing period for lime mortar is 7 days.
- Option B: 3 days. This is not the correct answer because the normal curing period for lime mortar is 7 days.
- Option C: 7 days. This is the correct answer because the normal curing period for lime mortar is 7 days.
- Option D: 10 days. This is not the correct answer because the normal curing period for lime mortar is 7 days.