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1. In our house, we use soap to clean the cooking pans. Your mother instructs you to clean thoroughly so that there are no soap layers to contaminate the food. For the project, you have red litmus, phenolphthalein, China rose solution, and blue litmus papers. What do you use as a chemistry student to safely check soap layers in the pan?
2. Vimal was asked to tell any four physical tests of salts. He will get chocolate for each correct answer. But, he got only \(3\) chocolates. Which of the following do you think is wrong?
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