0
Using air-dried samples for sieve analysis helps remove excess moisture, which can affect the accuracy of the test results. Additionally, drying the sample ensures that the particles maintain their integrity and do not clump together during the sieving process, resulting in more reliable and consistent data.
Add your answer:
Earn +20 pts
Why should the dried sample be kept in desiccator for cooling?
If a dried sample is warm, it will absorb water from the air while cooling. Placing it in a desiccator puts it in a dry atmosphere where no moisture is available to be absorbed from the air.
Why is it not recommended to leave an oven-dried sample in the open air for a long time before measuring its dry weight?
Leaving an oven-dried sample in the open air for a long time can lead to reabsorption of moisture from the environment, leading to an increase in the sample's weight. This can result in inaccurate measurements of the sample's dry weight and affect the validity of the experiment's results.
What may happen if you mix a tube too vigorously?
Mixing a tube too vigorously can introduce air bubbles into the sample, leading to inaccurate results. It may also cause sample loss due to splashing or spillage, affecting the concentration of the sample. Furthermore, excessive mixing can denature proteins or degrade the sample, impacting the quality of the analysis.
What is an air emission analysis?
An air emission analysis is a process of measuring and evaluating the types and amounts of pollutants released into the air from a specific source, such as an industrial facility or vehicle. This analysis helps to assess the impact of these emissions on air quality, human health, and the environment. The results are used to develop strategies for reducing emissions and improving air quality.
Which air sample contains the most carbon dioxide?
the leg
Why air dried sample used in sieve analysis?
to remove the air bubble, which are made error in volume. S.Kailash
Why air-dried sample is used in sieve analysis?
to remove the air bubble, which are made error in volume. S.Kailash
Why air dried sample is used in sieves analysis?
to remove the air bubble, which are made error in volume. S.Kailash
Why should the dried sample be kept in desiccator for cooling?
If a dried sample is warm, it will absorb water from the air while cooling. Placing it in a desiccator puts it in a dry atmosphere where no moisture is available to be absorbed from the air.
What is the Difference between air dried and oven dried soil sample?
Air dried soil samples are dried naturally at room temperature, while oven dried soil samples are dried using an oven at a controlled temperature. Air dried samples may retain some of the soil's original properties better, while oven dried samples may be quicker and more consistent in removing moisture. The choice between the two methods depends on the specific research objectives and sample characteristics.
Why is it not recommended to leave an oven-dried sample in the open air for a long time before measuring its dry weight?
Leaving an oven-dried sample in the open air for a long time can lead to reabsorption of moisture from the environment, leading to an increase in the sample's weight. This can result in inaccurate measurements of the sample's dry weight and affect the validity of the experiment's results.
What is the meaning of adb in coal specification?
ADB stands for Air Dried Basis in coal specification. This term refers to the moisture content of coal after it has been air dried under specific conditions. It is used to standardize coal analysis and compare the energy content of different coal samples.
Why are soil samples required to be air-dried and not sun-dried?
Soil samples are required to be air-dried instead of sun-dried to prevent potential alterations in the soil properties due to exposure to direct sunlight, which can lead to changes in moisture content, microbial activity, and nutrient levels. Air-drying allows for a more controlled and uniform drying process that better preserves the original characteristics of the soil sample.
Why is it advisable to keep atmospheric moisture from getting into the sample?
Moisture in the sample can introduce contamination or alter the sample's composition, leading to inaccurate results. It can also cause degradation of the sample, resulting in the loss of important information. Keeping atmospheric moisture out helps maintain the integrity of the sample for more reliable analysis.
What is the general composition of a soil sample?
The general composition of a soil sample will be some sand, some silt, some clay, and some organic matter, plus a certain amount of microbial life, air and (unless it's completely dried out) some water.
What may happen if you mix a tube too vigorously?
Mixing a tube too vigorously can introduce air bubbles into the sample, leading to inaccurate results. It may also cause sample loss due to splashing or spillage, affecting the concentration of the sample. Furthermore, excessive mixing can denature proteins or degrade the sample, impacting the quality of the analysis.
Why background scanning is done before scanning the sample in ftir?
Background scanning in FTIR is done to capture the interference signals from factors like ambient air or solvents, which can affect the accuracy of the sample signal. It helps determine the baseline noise level and allows for the removal of background signals from the sample spectrum, resulting in a more precise analysis of the sample.
