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 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 and gas . 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 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 ?
