Solution A turns universal indicator blue to purple whereas solution B turns universal indicator orange to red. (a) What will be the action of solution A on litmus ? (b) What will be action of solution B on litmus ? (c) Name any two substances which can give solutions like A. (d) Name any two substances which can give solutions like B. (e) What sort of reaction takes place when solution A reacts with solution B ? Lakhmir Singh Chemistry Class 10

Solution A turns universal indicator blue to purple whereas solution B

1.	Solution A turns universal indicator blue to purple whereas solution B turns universal indicator orange to red. (a) What will be the action of solution A on litmus ? (b) What will be action of solution B on litmus ? (c) Name any two substances which can give solutions like A. (d) Name any two substances which can give solutions like B. (e) What sort of reaction takes place when solution A reacts with solution B ? Lakhmir Singh Chemistry Class 10
Answer» i) Since UNIVERSAL indicator is being turned from blue to purple, therefore solution A is a basic solution and hence litmus paper will be turned to blue by the action of solution A. ii) Since universal indicator is being turned from orange to red, therefore solution B is an ACIDIC solution and hence litmus paper will be turned to red by the action of solution A. iii) Two substances which are basic and can GIVE solutions like A are Calcium hydroxide and Sodium hydroxide. iv) Two substances which are acidic and can give solutions like B are orange juice and lemon juice. V) When solution A REACTS with solution B , the type of reaction that will occur is called neutralization reaction as they will balance out the pH.