Introduction:
Soil is a mixture of various components such as minerals, organic matter, water, and air. Sometimes, we need to separate or dissolve specific mixtures from the soil for various purposes such as analyzing soil fertility or removing impurities. One commonly used method for separating mixtures from soil is sieving.

Sieving:
Sieving is a process that involves separating particles of different sizes using a sieve or a mesh. It is based on the principle that particles smaller than the mesh size will pass through, while larger particles will be retained.

Procedure:
The process of dissolving mixtures from soil using sieving involves the following steps:

1. Gathering Soil Samples: Collect soil samples from the desired location using a trowel or any other suitable tool. Ensure that the samples are representative of the entire area under consideration.

2. Drying the Soil: Spread the soil samples on a flat surface and leave them to dry. Drying helps in removing excess moisture and makes the sieving process more effective.

3. Preparing the Sieve: Take a stack of sieves with different mesh sizes, starting from a coarse sieve at the top to a fine sieve at the bottom. Place a container or a tray at the bottom of the stack to collect the soil particles that pass through.

4. Sieving the Soil: Take a small amount of dried soil sample and place it on the top sieve of the stack. Gently shake or tap the sieves to facilitate the separation of particles based on size. The soil particles that are larger than the mesh size of the top sieve will be retained on it, while smaller particles will pass through to the lower sieves.

5. Collecting the Fractions: After sieving, carefully remove each sieve from the stack and collect the soil particles retained on each sieve. These fractions can be further analyzed or used for specific purposes.

Conclusion:
Sieving is an effective method for separating mixtures from soil based on particle size. It allows us to isolate different fractions of soil based on their size, which can be useful for various applications. By following the mentioned procedure, one can successfully dissolve mixtures from soil using sieving.