Q8 of 22 Page 41

What is a universal indicator? Give its use.

the Universal indicator is a solution or a pH paper which is made of several compounds which change its colour according to the given solution to denote the nature of the solution and also the strength of the solution.


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6

An aqueous solution of an acid conducts electricity. Give reason.

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Effervescences are formed when the batter for cake is heated. Which substance is present in batter?

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While diluting an acid, why is it recommended that the acid should be added to water and not water to the acid?

 10

Write the name and formula of each or the following

(a) an acidic salt


(b) a basic salt.