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Standard VII

Chemistry

pH Scale

A student tes...

Question

A student tests the $p H$ of pure water using a $p H$ paper. It shows the green color. If a $p H$ paper is used after adding lemon juice to water, what color will be observed?

Green

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Red

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Yellow

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purple

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Solution

The correct option is C Yellow
As adding lemon (citric acid) makes the water slightly acidic, $p H$ just lowers, so colour changes from green to yellow.

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A student tests the pH of pure water using a pH paper. It shows the green color. If a pH paper is used after adding lemon juice to water, what color will be observed?

The correct option is C YellowAs adding lemon (citric acid) makes the water slightly acidic, pH just lowers, so colour changes from green to yellow.

A student tests the $p H$ of pure water using a $p H$ paper. It shows the green color. If a $p H$ paper is used after adding lemon juice to water, what color will be observed?

The correct option is C Yellow
As adding lemon (citric acid) makes the water slightly acidic, $p H$ just lowers, so colour changes from green to yellow.