In which condition will aquatic organisms in a river or lake be at greater risk from acid rain?
Answer and explanation
Correct answer: When the pH of water becomes very low
The governing concept is the effect of pH on aquatic ecosystems. Acid rain introduces acidic substances into a water body and can lower its pH. If the pH becomes very low, many fish, amphibians, invertebrates, eggs, and aquatic plants may be unable to survive or reproduce normally. Therefore, option A is correct. A pH near 7 is comparatively suitable, while clear appearance does not prove chemical safety and the absence of gas is not the deciding factor.
Frequently asked questions
What is the correct answer to this question?
When the pH of water becomes very low
Why is this the correct answer?
The governing concept is the effect of pH on aquatic ecosystems. Acid rain introduces acidic substances into a water body and can lower its pH. If the pH becomes very low, many fish, amphibians, invertebrates, eggs, and aquatic plants may be unable to survive or reproduce normally. Therefore, option A is correct. A pH near 7 is comparatively suitable, while clear appearance does not prove chemical safety and the absence of gas is not the deciding factor.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
Student feedback
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
