EASY
10th CBSE
IMPORTANT
Earn 100

You have been provided with three test-tubes. One of these test-tubes contains distilled water, and the other two contain an acidic and a basic solution, respectively. If you are given only blue litmus paper, how will you identify the contents of each test-tube?

Important Questions on Acids, Bases And Salts

MEDIUM
10th CBSE
IMPORTANT
A substance X, which is used as an antacid, reacts with dilute hydrochloric acid to produce a gas Y which is used in one type of fire-extinguisher. Name the substance X and gas Y. Write a balanced equation for the chemical reaction, which takes place.
MEDIUM
10th CBSE
IMPORTANT
How is the neutralisation of carbonate with an acid different from the neutralisation of an oxide or a hydroxide?
EASY
10th CBSE
IMPORTANT
What happens to (a) the H+ ions, and (b) temperature of the solution, when an acid is neutralised?
EASY
10th CBSE
IMPORTANT
Name the gas evolved when zinc granules are treated/heated with a hydrochloric acid solution. (Oxygen/Chlorine/Hydrogen)
EASY
10th CBSE
IMPORTANT
Name the gas evolved when zinc granules are treated/heated with sodium hydroxide solution.
EASY
10th CBSE
IMPORTANT
What is the common name of water-soluble bases?
EASY
10th CBSE
IMPORTANT
What is common in all the water-soluble bases (or alkalis)?(Hydroxide ions/Hydrogen ions)
EASY
10th CBSE
IMPORTANT
Why does tooth decay start when the pH of the mouth is lower than 5.5?