Learning Path
Question & Answer1
Understand Question2
Review Options3
Learn Explanation4
Explore TopicChoose the Best Answer
A
Lemon juice is acidic, baking soda is neutral, and soda is alkaline.
B
Lemon juice is acidic, baking soda is alkaline, and soda is acidic.
C
Lemon juice is neutral, baking soda is alkaline, and soda is acidic.
D
Lemon juice is neutral, baking soda is acidic, and soda is alkaline.
Understanding the Answer
Let's break down why this is correct
Answer
The red color on the indicator paper shows that lemon juice is acidic, giving it a pH below 7. The blue color means the baking soda solution is basic, so its pH is above 7. The yellow‑ish hue of soda indicates it is only slightly acidic or close to neutral, with a pH just under or near 7. Thus, lemon juice is acidic, the baking soda solution is basic, and soda is only mildly acidic or nearly neutral. This matches the colors we saw on the universal indicator paper.
Detailed Explanation
The red color shows lemon juice is acidic, the blue color shows baking soda is alkaline, and the yellowish color shows soda is acidic. Other options are incorrect because The idea that baking soda is neutral is wrong; The belief that lemon juice is neutral is incorrect.
Key Concepts
pH scale and acidity
use of universal indicator paper
chemical properties of common liquids
Topic
pH Testing of Common Liquids
Difficulty
easy level question
Cognitive Level
understand
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