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 В.
5. What sort of reaction takes place when solution A reacts with solution В?

Answer 1

1. Solution A turns red litmus blue.
2. Solution B turns blue litmus red.
3. Sodium hydroxide (NaOH) and milk of magnesia.
4. Hydrochloric acid (HCl) and lemon juice.
5. A neutralisation reaction occurs when an acid (Solution B) reacts with a base (Solution A) to form a salt and water.