Question

To prepare a colloidal solution of starch we should​

Answer 1

Answer:

Pour a few drops of distilled water and pestle the starch into a thin paste. Transfer the grinded paste to a 50 ml beaker. Take a 250 mL beaker and pour 100 mL of distilled water to it and heat the water to boiling. Slowly pour the paste into the boiling water and constantly keep stirring with the help of glass rod.

Explanation:

see the answer

Answer 2

Answer:

• Take 500 mg of starch in a mortar and add few ml of distilled water.
• Grind the starch to make a thin paste and transfer this paste to a 50 ml beaker.
• Take about 100 ml of distilled water in a 250 ml beaker and heat the beaker so that water starts boiling.
• Pour the paste slowly with stirring into boiling water in the beaker.
• Continue boiling for 10 minutes and then allow the beaker to cool.
• Filter the content of the beaker through a filter paper mixed in a funnel label and name it as "starch sol".

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