There are different types of chemical reactions occurring around us or being carried out for the benefit of mankind e.g. combustion reaction, decomposition reaction, redox and photochemical reaction.
Now, answer the following questions:
(i) Combustion of coke is a combination reaction. CO2 is not a pollutant. Then why is combustion of coke harmful?
(ii) What values have been added to our lives by electroplating? Give an example.
(iii) How photochemical reactions have played an important role in photography?
Answers
Answer:
There are different types of chemical reactions occurring around us or being carried out for the benefit of mankind e.g. combustion reaction, decomposition reaction, redox and photochemical reaction.
Now, answer the following questions:
(i) Combustion of coke is a combination reaction. CO2 is not a pollutant. Then why is combustion of coke harmful?
(ii) What values have been added to our lives by electroplating? Give an example.
(iii) How photochemical reactions have played an important role in photography?
Explanation:
There are different types of chemical reactions occurring around us or being carried out for the benefit of mankind e.g. combustion reaction, decomposition reaction, redox and photochemical reaction.
Now, answer the following questions:
(i) Combustion of coke is a combination reaction. CO2 is not a pollutant. Then why is combustion of coke harmful?
(ii) What values have been added to our lives by electroplating? Give an example.
(iii) How photochemical reactions have played an important role in photography?
Answer:
i. Co2 is not a pollutant when present in the atmosphere up to a certain percentage. But when Co2 used in excess than it is harmful. Combustion of coke releases harmful gases such as carbon monoxide which is harmful not only for the environment but also for all the living beings.
ii. 10 Daily Life Examples Of Electroplating
Aesthetics. Although gold and silver are one of the most expensive metals and a person has to plan his budget accordingly to buy gold jewellery. ...Protective Barriers. ...Prevent Friction. ...Conduction of Electricity. ...Prevent Tarnishing. ...Increasing Thickness. ...Protection from Radiations. ...
iii. Photography involves a photochemical process which converts silver bromide to metallic silver by the action of photochemical reaction. Silver bromide is used as an emulsion which develops a photographic image. On exposure to light silver bromide is decomposed to metallic silver and it preserves the photographic image.
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