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Q. Identify the term 'ash' in terms of living tissue sample analysis from the statements given below.

Biomolecules

Solution:

After burning the dry tissue, all the organic compounds are oxidised to gaseous form $\left( CO _{2}\right.$ and water vapour) and are removed. The material left which contains inorganic elements (e.g. calcium, magnesium, etc) is termed 'ash'.