Class 7 Exam > Class 7 Questions > Which of the following statements is incorrec...
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Which of the following statements is incorrect?
- a)acid turns blue litmus red
- b)base turns red litmus blue
- c)both (a) and (b)
- d)water change the colour of a litmus
Correct answer is option 'D'. Can you explain this answer?
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Which of the following statements is incorrect?a)acid turns blue litmu...
Water is neither acidic or basic; it is neutral.
we use litmus paper for check that a substance is acidic or basic.
we use litmus paper for check that a substance is acidic or basic.
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Which of the following statements is incorrect?a)acid turns blue litmu...
The incorrect statement among the given options is D: water change the colour of a litmus.
Explanation:
- Litmus is a natural dye extracted from lichens and is used as an indicator to test the acidity or alkalinity of a substance.
- Acidic substances turn blue litmus paper red, indicating the presence of an acid (Option A).
- Basic substances turn red litmus paper blue, indicating the presence of a base (Option B).
- When water is tested with litmus paper, it remains neutral and does not change the color of the litmus paper. Water is considered a neutral substance (pH 7) and does not have acidic or basic properties (Option D).
- Therefore, Option D is incorrect, and the correct answer is D: water change the colour of a litmus.
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Which of the following statements is incorrect?a)acid turns blue litmus redb)base turns red litmus bluec)both (a) and (b)d)water change the colour of a litmusCorrect answer is option 'D'. Can you explain this answer?
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