List two common acidic substances, two common basic substances, and two common neutral substances that you encounter in your daily life.
Here are examples of common substances: \begin{itemize} \item \textbf{Acidic Substances:} Lemon juice (contains citric acid), Vinegar (contains acetic acid), Curd (contains lactic acid). \item \textbf{Basic Substances:} Baking soda solution, Soap solution, Window cleaner (contains ammonia). \item \textbf{Neutral Substances:} Pure water, Common salt solution, Sugar solution. \end{itemize}
Explanation
Grading Rubric: 1. Provides at least two correct examples for acidic substances. 2. Provides at least two correct examples for basic substances. 3. Provides at least two correct examples for neutral substances. (Minor variations in examples are acceptable as long as they are scientifically accurate for Class 7 level).