Question 1. What does pH indicate? A. Temperature of a substance B. Acidic or basic nature of a substance C. Colour of a substance D. Mass of a substance Correct answer: B. Acidic or basic nature of a substance, Question 2. What is the pH of a neutral solution? A. 2 B. 5 C. 7 D. 12 Correct answer: C. 7, Question 3. Which of the following is acidic? A. Soap solution B. Baking soda solution C. Lemon juice D. Pure water Correct answer: C. Lemon juice, Question 4. A solution has a pH of 10. What is its nature? A. Acidic B. Neutral C. Basic D. None of these Correct answer: C. Basic

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