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Exploring Substances: Acidic, Basic, and Neutral — Practice

15 questions 15 min Recall + understand

  1. Q1. Substances that turn blue litmus paper to red are said to be

  2. Q2. A substance that turns red litmus paper to blue is

  3. Q3. Substances that change neither the colour of blue litmus nor of red litmus paper are called

  4. Q4. Litmus, the most common acid-base indicator, is obtained from

  5. Q5. Litmus is available in which two forms?

  6. Q6. The common acid present in lemon juice is

  7. Q7. Amla contains ascorbic acid, which is also commonly known as

  8. Q8. Tartaric acid is the common acid found in

  9. Q9. Red rose extract gives which colour when added to an acidic solution?

  10. Q10. When soap solution is added to red rose extract, the colour of the extract becomes

  11. Q11. The yellow colour of turmeric paper turns to which colour in a basic solution?

  12. Q12. Substances whose odour changes on adding acidic or basic substances are called

  13. Q13. The reaction in which an acid and a base combine to give a solution that is neither acidic nor basic is called

  14. Q14. According to the chapter, a neutralisation reaction can be represented as

  15. Q15. When a red ant bites, it injects which acid into the skin?

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