Class 10 Exam > Class 10 Questions > Find the incorrect statement.a)The pH of rain...
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Find the incorrect statement.
- a)The pH of rainwater is nearly 7
- b)pH of the stomach is approximately 4.5
- c)The pH of acid rain is nearly 5.6
- d)Plants grow well in natural soil
Correct answer is option 'B'. Can you explain this answer?
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Find the incorrect statement.a)The pH of rainwater is nearly 7b)pH of ...
Human stomach produces gastric juices which contains hydrochloric acid in them resulting in a pH of 1.4.
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Find the incorrect statement.a)The pH of rainwater is nearly 7b)pH of ...
Incorrect Statement: The pH of the stomach is approximately 4.5 (Option B)
Explanation:
The pH scale is a measure of the acidity or alkalinity of a solution. It ranges from 0 to 14, with 7 being considered neutral. A pH value below 7 indicates acidity, while a pH value above 7 indicates alkalinity.
The pH of rainwater is nearly 7:
Rainwater is considered to be slightly acidic due to the presence of dissolved carbon dioxide (CO2) from the atmosphere. Carbon dioxide combines with water to form carbonic acid, which lowers the pH of rainwater. The pH of rainwater is typically around 5.6, which is slightly acidic but still closer to neutral (pH 7).
The pH of acid rain is nearly 5.6:
Acid rain is formed when pollutants like sulfur dioxide and nitrogen oxides react with water vapor in the atmosphere, forming sulfuric acid and nitric acid. Acid rain is more acidic than normal rainwater, with a pH value below 5.6. It can have harmful effects on the environment, including damage to plants, animals, and buildings.
Plants grow well in natural soil:
Natural soil provides the necessary nutrients and minerals required for the growth of plants. The pH of natural soil varies depending on the region and the type of soil. Generally, plants grow well in soil with a slightly acidic to neutral pH range, which is around 6 to 7.5. However, certain plants have specific pH requirements for optimal growth.
The pH of the stomach is approximately 4.5:
The stomach secretes gastric acid, which aids in the digestion of food. Gastric acid is highly acidic, with a pH value of around 1 to 3.5. The low pH of the stomach helps to break down food and kill bacteria that may be ingested.
Therefore, the incorrect statement is Option B, which suggests that the pH of the stomach is approximately 4.5. The actual pH of the stomach is much lower, ranging from 1 to 3.5.
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Find the incorrect statement.a)The pH of rainwater is nearly 7b)pH of the stomach is approximately 4.5c)The pH of acid rain is nearly 5.6d)Plants grow well in natural soilCorrect answer is option 'B'. Can you explain this answer?
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