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Define Procedure for Detection of Chalk in Flour
Carry out the experiment following the procedure given herewith:
1. Take a teaspoon of flour in a test tube and shake it with 10 ml distilled water.
2. Warm 20 ml dilute HCl in a beaker to 50-60°C and add to the test tube containing flour.
3. Observe for the effervescence. If gas bubbles are released, it indicates the presence of chalk in flour.
figure of contractile vacuole of amoeba
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