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How to make a filter
A plant pot with a plug of cotton wool in the bottom and a layer of sand a few inches deep makes a satisfactory filter for many purposes.
Make some muddy water by stirring earth in a dish of water. Pour the water into the filter and catch it in a clear glass as it drips out. See if you can better the filter by building it up with alternate layers of sand and powdered charcoal. like a filter will work very well for clarifying water before it is boiled for drinking purposes.
A stone seems to weigh less in water Weigh a large stone on a pair of kitchen scales. Put a loop of heavy string around the stone and weigh it again suspended in a pail of wate
Q. What are the impacts of minimally processed foods? Impacts of minimally processed foods are: it maintains freshness and quality; convenient and ready-to-cook form products;
how do we arrange element in a periodic table
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what are the different respiratory disease in man . give their symptoms and cause
Which substance is NOT likely to have been formed by glaciers: dike
Advantages of Proteins Proteins are compounds of carbon, hydrogen, oxygen and nitrogen. On an average, proteins contain 16% nitrogen. Most proteins also contain sulphur and
Role of communication in promoting education: Transmission of knowledge and information, which is the first step in education, is obviously possible only through communication
What is the significance of soil colour Soil colour is significant in soil classification, i.e. the characterisation of soil, interpreting soil properties and understanding so
what is a hepar
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