Question

14. sanju during his visit to his village found that most of the fish in the pond of his village were dying. he also observed that the waste from the nearby factory was following into the pond. why the fish were dying ? lf factory waste is acidic in nature how can it be neutralized?
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Answer 1

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(i) The wastes of factory may contain high ratio of basic or acidic chemicals. These chemicals make aquatic life difficult.

(ii) Base will neutralize the acids. So, by adding the base (limestone, lime etc) into water we can make it less harmful and neutral too.

----------------- Or ------------------

(a) Factory wastes may have a large proportion of basic or acidic substances. These pollutants make it harder to live in the water.

(b) The acids will be neutralised by the base. So, by adding a base to water, such as limestone or lime, we can make it less hazardous and neutral.

Answer 2

Answer:

Answer:

(i) The wastes of factory may contain high ratio of basic or acidic chemicals. These chemicals make aquatic life difficult.

(ii) Base will neutralize the acids. So, by adding the base (limestone, lime etc) into water we can make it less harmful and neutral too.

----------------- Or ------------------

(a) Factory wastes may have a large proportion of basic or acidic substances. These pollutants make it harder to live in the water.

(b) The acids will be neutralised by the base. So, by adding a base to water, such as limestone or lime, we can make it less hazardous and neutral.

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Explanation:

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