HARD
10th ICSE
IMPORTANT
Earn 100

Solve the crossword puzzle with the help of the given hints.

Question Image

Across:

1. Gas released when a metal carbonate reacts with an acid.

3. This indicator gives pinkish red colour in acidic solution.

10. Mixture of sodium bicarbonate and tartaric acid to make cakes.

11. Common name of dilute solution of acetic acid. 

13. This indicator gives magenta pink colour in alkaline solution.

14. Acids and bases react to give _____ reaction.

15. Plaster of Paris is obtained by heating this substance.

Down:

1. The gas released in the process of electrolysis of aqueous sodium chloride.

2. Change in colour of litmus in sodium hydroxide solution (3 words).

4. Chemical name of washing soda.

5. Medicine for acidity and indigestion.

6. Common name of sodium bicarbonate.

7. Change in colour of litmus in hydrochloric acid. (3 words) 

8. Gas released when an active metal reacts with an acid.

9.  Common name of calcium sulphate hemihydrate. 

12. Acids and bases react to produce _____ and water. 

Important Questions on Acids, Bases and Salts

MEDIUM
10th ICSE
IMPORTANT
What are indicators? Give examples of two natural and two artificial indicators.
MEDIUM
10th ICSE
IMPORTANT
To a solution of hydrochloric acid, 3drops of methyl orange are added. What will be the change in the colour of the solution? Why?
MEDIUM
10th ICSE
IMPORTANT
While performing an experiment, a student added a few drops of an indicator to the sodium hydroxide solution. The solution immediately becomes pink. Which Indicator is used by the student? Explain giving reason.
HARD
10th ICSE
IMPORTANT
If you are provided with three beakers, Beaker A contains distilled water, Beaker B contains a basic solution and Beaker C contains an acidic solution. How will you identify the contents of each beaker if you have only blue litmus paper? 
HARD
10th ICSE
IMPORTANT
Show that non-metallic oxides are acidic in nature with the help of a reaction. 
HARD
10th ICSE
IMPORTANT
The marble statues are often slowly corroded when kept open for a long time. Give suitable reason. 
MEDIUM
10th ICSE
IMPORTANT
List two differences between acids and bases on the basis of chemical properties.
MEDIUM
10th ICSE
IMPORTANT

 Write balanced chemical equations for the following reaction:

Dilute sulphuric acid reacts with aluminium powder.