Question

study of water samples collected from different water bodies for their pH clarity and presence of living organisms inference

Answer 1

Procedure

Let’s first check the pH of water sample using pH paper.

Take a pH paper strip and dip into the beaker that contains back water.

Keep the wet pH paper strip on the tile.

Do the same procedure for borewell water and pond water.

Wait for some time to dry the pH paper.

Note the colour and compare with the colour chart given on the broad range indicator paper and get a rough estimate of pH of the sample solution.

We can observe that backwater and bore well water has pH 8 and pond water has pH 5.

Let’s check the pH of the water sample using universal indicator solution.

Using a dropper take some universal indicator solution.

Put 5 drops of indicator solution into the test tube that contains water sample.

Note the colour developed and compare it with the colour chart.

We can observe that backwater and bore well water has pH 8 and pond water has pH 5.

Answer 2

Procedure

Let’s first check the pH of water sample using pH paper.

Take a pH paper strip and dip into the beaker that contains back water.

Keep the wet pH paper strip on the tile.

Do the same procedure for borewell water and pond water.

Wait for some time to dry the pH paper.

Note the colour and compare with the colour chart given on the broad range indicator paper and get a rough estimate of pH of the sample solution.

We can observe that backwater and bore well water has pH 8 and pond water has pH 5.

Let’s check the pH of the water sample using universal indicator solution.

Using a dropper take some universal indicator solution.

Put 5 drops of indicator solution into the test tube that contains water sample.

Note the colour developed and compare it with the colour chart.

We can observe that backwater and bore well water has pH 8 and pond water has pH 5

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