Which of the following observations is true about dilute solution of acetic acid?
Which of the following observations is true about dilute solution of acetic acid?
Options
D
Marking Scheme
- 11 mark for selecting the correct option D.
Hint
Recall the acidic nature of carboxylic acids on litmus paper and the characteristic smell of vinegar.
Quick Oral Answer
Acetic acid is acidic in nature, so it turns blue litmus red, and it has a characteristic vinegar-like smell.
Analysis & Explanation
Acetic acid () is a carboxylic acid. Being acidic in nature, it turns blue litmus paper red. Dilute acetic acid has a characteristic smell of vinegar (in fact, vinegar is a solution of acetic acid in water). Therefore, option D is correct.
- Option A is incorrect because acids turn blue litmus red, not red litmus blue.
- Option B is incorrect because acetic acid smells like vinegar, not onion.
- Option C is incorrect because it does not smell like orange and does not turn red litmus blue.
Common Mistakes
- 1Students might confuse the litmus test for acids and bases, or confuse the smell of acetic acid with other substances.
Interesting Facts
Vinegar, which is widely used in cooking and food preservation, is simply a dilute solution of acetic acid () in water.
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Frequently Asked Questions
How many marks does this question carry in CBSE Class 10 Science 2012?
This question carries 1 mark in the CBSE Class 10 Science 2012 examination.
Which chapter does this question come from in Science?
This question is from the chapter "Carbon and its Compounds" in the CBSE Class 10 Science syllabus.
What topic does this question cover in Science?
This question covers the topic "Properties of Acetic Acid" from CBSE Class 10 Science.
What type of question is this in the CBSE Class 10 Science 2012 paper?
This is a MCQ question from Section B in the CBSE Class 10 Science 2012 paper.