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(iv) Common salt solution w which of these are acidic, basic, or neutral. Upon adding a few drops of r d litmus solution to solution A, it turns blue. When a few drops of turmeric solution are … Jan 1, 2024 · Activity 4.1 in Class 7's 'Acids, Bases, and Salts' demonstrates how to use litmus paper to identify acidic and basic substances. Students test various solutions, including lemon … Ans: Basic substances (soap solution, baking soda solution, lime water, washing powder solution) turn turmeric paper red, while acidic (lemon juice, amla juice, tamarind water, vinegar) and … May 15, 2025 · Q1. A solution turns the red litmus paper blue. Excess addition of which of the following solutions would reverse the change? (i) Lime water (ii) Baking soda (iii) Vinegar (iv) … Jul 20, 2023 · Learn about acids and bases in Chapter 2 and conduct the "Litmus Test" activity. Test various solutions including juices, cold drinks, and more with blue and red litmus papers … May 7, 2025 · Solutions For All Chapters – Science Curiosity Class 7 Exploring Substances: Acidic, Basic, and Neutral 1. A solution turns the red litmus paper to blue. Excess addition of … Jun 28, 2025 · The table outlines the expected color changes of blue and red litmus paper when exposed to various substances. Acidic substances, like lemon juice and vinegar, turn blue … Jun 2, 2025 · Then, use acidic and basic substances like lemon juice, soap solution or baking soda solution to develop colours and patterns. Observe how the colours change based on the ….
