Question

On the occasion of Diwali, Rohan used solution of calcium hydroxide (slaked) for white washing walls. After two or three days of white washing a compound is formed. This formed compound gives a shiny appearance to the walls. Read the above passage and answer the following questions.
(i) What is the chemical name of compound formed after 2-3 days of white washing?
(ii) Write the chemical reaction occurring during calcium hydroxide to a shiny appearance to the walls.
(iii) Name the type of reaction.

Answer 1

Answer:

Explanation:

1) calcium carbonate CaCo3  

2) Ca(OH)2 + Co2 ---------->  CaCo3 + H2O

3) neutralisation reaction  

NON-METALLIC OXIDES ARE ACIDIC.

Answer 2

Answer:

1) CaCO3 (Calcium carbonate)

2) Ca(OH)2 + CO2 ——> CaCO3 + H2O

3) Neutralisation reaction