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What is water pollution? Describe the effects of using polluted water.

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Give some disadvantages of hard water.

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Explain five important waterborne diseases. How can these be prevented?

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Explain agricultural effluents are fatal for aquatic I life.

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Explain the methods of removing permanent hardness.

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How polarity of water molecule plays its role to dissolve the substances?

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How waterborne diseases can be prevented?

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What are the reasons of waterborne diseases?

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Why pesticides are used?

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How detergents make the water unfit for aquatic life?

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What is difference between biodegradable and non-biodegradable substances?

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Mention the disadvantages of detergents.

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What are the effects of temporary hardness in water?

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What are the causes of hardness in water?

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Differentiate between soft and hard water

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How lime stone dissolves in water?

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How water dissolves sugar and alcohols?

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Why non-polar compounds are insoluble in water?

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