
The aqueous solution having pH 2 is how many times more acidic than aqueous solution having pH 4?


Important Questions on Acids, Bases and Salts

A milkman adds a very small amount of baking soda to fresh milk.
Why does he shifts the pH of the fresh milk from 6 to slightly alkaline?

A milkman adds a very small amount of baking soda to fresh milk.
Why does this milk take a long time to set as curd?



Vankarbhaibhas explained the definition of an acid and a base, given by Robert Boyle in the classroom. Then the students of the classroom gave some suggestions regarding acid and base. Which suggestion is wrong among these?
Prashant: Acids are sour in taste and bases are bitter.
Dhruvi: Acid does not give any effect on wet blue litmus paper while base turns blue litmus paper blue.
Seil: Acid liberates dry hydrogen gas by the reaction with the metal. The base does not react with all metals.
Jaydeep: By neutralisation reaction between acid and base, salt and water is produced.


