Give reasons for the following observations
(a) Air holes of a gas burner have to be adjusted when the vessels being heated get blackened by the flame.
(b) Use of synthetic detergents causes pollution of water.
Answers
Explanation:
(a) Air holes present in the gas burner has to be adjusted because blackening of vessels proves that the air holes which is present in the gas stove is being blocked and therefore the fuel is not burning entirely (due to insufficient supply of oxygen )
(b) Some of the detergents (synthetic) are not completely decomposed by bacteria (micro organisms) i.e they are considered as non biodegradable and therefore causes water pollution.
You can get all the answers of Chapter 4 in the link below:
https://brainly.in/question/13880481
Few questions related to this chapter:
Fill in the following blanks with suitable words
(a) The process of burning.....
brainly.in/question/14916389
Which of the following hydrocarbons will give substitution reactions and wh.....
brainly.in/question/14916372