This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 4 Acids – Quiz 47 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 4 Acids Quiz 47 (7 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The acid changes the color of blue litmus to ..... A) Red. B) Acid. C) Base. D) Pink. Show Answer Correct Answer: A) Red. 2. Which is known as caustic soda? A) Sodium hydroxide. B) Sodium bicarbonate. C) Sodium chloride. D) Potassium hydroxide. Show Answer Correct Answer: A) Sodium hydroxide. 3. ..... is generally an ionic compound that produces hydroxide ions when dissolved in water. A) An acid. B) A base. C) A salt. D) None of the above. Show Answer Correct Answer: B) A base. 4. Acid in our stomach: A) Hydrochloric acid. B) Sulfuric acid. C) Acetic acid. D) Carbonic acid. Show Answer Correct Answer: A) Hydrochloric acid. 5. A student detected the pH of four unknown solutions A, B, C and D as follows:11, 5, 7 and 2. Predict the nature of these solutions. Which one is neutral solution A) A. B) B. C) C. D) D. Show Answer Correct Answer: C) C. 6. When found in food, acids are ..... A) Sour. B) Bitter. C) Salty. D) Slippery. Show Answer Correct Answer: A) Sour. 7. NaBr A) Bromi mush. B) Sodium bromide. C) Sodium bromate. D) Sodium bromite. Show Answer Correct Answer: B) Sodium bromide. ← PreviousRelated QuizzesClass 7 Science Chapter 4 Acids Quiz 1Class 7 Science Chapter 4 Acids Quiz 2Class 7 Science Chapter 4 Acids Quiz 3Class 7 Science Chapter 4 Acids Quiz 4Class 7 Science Chapter 4 Acids Quiz 5Class 7 Science Chapter 4 Acids Quiz 6Class 7 Science Chapter 4 Acids Quiz 7Class 7 Science Chapter 4 Acids Quiz 8Class 7 Science Chapter 4 Acids Quiz 9Class 7 Science Chapter 4 Acids Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books