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Acids, Bases and Salts — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceAcids, Bases and Salts5 Marks
Question
Solution A turns universal indicator blue to purple whereas solution B turns universal indicator orange to red.
  1. What will be the action of solution A on litmus?
  2. What will be action of solution B on litmus?
  3. Name any two substances which can give solutions like A.
  4. Name any two substances which can give solutions like B.
  5. What sort of reaction takes place when solution A reacts with solution B?
✓

Answer

  1. Solution A turns universal indicator blue to purple so it is basic in nature and will turn litmus blue.
  2. Solution B turns universal indicator orange to red so it is acidic in nature and will turn litmus red.
  3. Milk of magnesia and sodium hydroxide solution are bases like solution A.
  4. Lemon juice and hydrochloric acid are acids like solution B.
  5. Neutralisation reaction.

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