Find the Fsc Part 2 Online Preparation for Chemistry Chapter 16 (Environment Chemistry )

Question # 1

Define ecosystem.

Ans 1: Ecosystem is a similar unit of biosphere which consists of community of organisms and their zone and depend on physical factor such as soil water and air.

Question # 2

Why ozone layer has depleting?

Ans 1: The concentration of ozone in the stratosphere is behind depet through various chemical reaction but the it is seriously affected by chlorofluorocarbons.chlorofluorocarbons used as refrigerants in air conditioning and in aerosol spray are inert in the troposphere but slowly diffuse into stratosphere ,where they are subjected to ultraviolet radiation generating Ci free radicals which react with ozone and cause depletion.

Question # 3

What is Biosphere?

Ans 1: Biosphere is the region of earth capable of supporting life.It includes lower atmosphere ,the oceans,rivers,soils and solid sediments that activity interchange material with all types of living organism i,e human beings animals,and plants.

Question # 4

What are sulphate aerosols?

Ans 1: SO₂,SO₃because of their pungent odour are very irritated and uccocating through various reaction in the atmosphere they form sulphate aerosols,These aerosol cause sever respiratory troubles particularly among older people.

Question # 5

What is the effect of Acid rain on earth?

Ans 1: Acidification of the soil and rocks can leach metals like aluminium ,mercury ,lead and calcium and discharges them into water bodies.These heavy metals are accumulated in the fished and are health hazards for human and birds they eat these fishes,The elevated concentration of aluminium is harmful for fished as it clogs the gills this causing suffocation,Acidification of the soil can also each nutrient thus damaging leaves and plants and growth of forest.

Question # 6

Explain purification of water by use of coagulating agent.

Ans 1: The coagulant such as aluminium sulphate or alum is added to the raw water,which cause the precipitation of suspend impurities,For example aluminium hydroxide is precipitated when alum is added to water in alkaline medium.
Many suspended particles get absorbed on the surface of gelatinous aluminium hydroxide precipitate,Ferric salts are commonly used as coagulants but they are difficult to handle.

Question # 7

How ozone layer in stratosphere is affected by chlorofluorocarbons?

Ans 1: Chlorofluorocarbons used as refrigerants in air conditioning and in aerosol spray are inert in the troposphere but slowly diffuse into stratosphere ,where they are subjected to ultraviolet radiation generating Ci free radicals which react with ozone and cause depletion.

Question # 8

What are primary and secondary pollutants in atmosphere?

Ans 1: Primary Pollutants:The waste product given out from chimneys of industrial units and exhaust of automobiles may contain gases such as sulphur dioxide.sulphur trioxide,nitrogen oxides,carbon monoxide compound of fluorine and radioactive material .The waste products are called primary pollutants.
Secondary Pollutants:The primary pollutants in the atmosphere through various reaction product some pollutants such as sulphuric acid,nitrogen monoxide,carbonic acid,Hydrofluoric acid keatons and peroxybenzolara called secondary pollutants.

Question # 9

Discuss Detergent as water pollutants?

Ans 1: Detergents are excessively used in industry and household as cleaning agents,The amount of disposed detergent in waste water is increasing day by day,This waste water when discharged in rivers,sea ,greatly affects the aquatic life.

Question # 10

Discuss photochemical smog and give its properties?

Ans 1: Photochemical smog consists of higher concentration of oxidants like ozone and is also termed as oxidizing smog.It is a yellowish brownish grey haze which is formed in the presence of water droplets and chemical reactions of the pollutants in the air.It has unpleasant odor because of its gaseous components.

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Fsc Part 2 Online Preparation for Chemistry Chapter 16 (Environment Chemistry )

Online Short Questions For Chapter 16 "12th Class Chemistry Chapter 16 Short Questions Preparation "

Chemistry - 12th Class Chemistry Chapter 16 Short Questions Preparation

Define ecosystem.

Why ozone layer has depleting?

What is Biosphere?

What are sulphate aerosols?

What is the effect of Acid rain on earth?

Explain purification of water by use of coagulating agent.

How ozone layer in stratosphere is affected by chlorofluorocarbons?

What are primary and secondary pollutants in atmosphere?

Discuss Detergent as water pollutants?

Discuss photochemical smog and give its properties?

Prepare Complete Set Wise Questions For Chapter 16 "12th Class Chemistry Chapter 16 Short Questions Preparation "

Set 1

Set 2

Set 3

12th Class Chemistry Chapter 16 Short Questions Preparation - Set 1

Define ecosystem.

Why ozone layer has depleting?

What is Biosphere?

What are sulphate aerosols?

What is the effect of Acid rain on earth?

Explain purification of water by use of coagulating agent.

How ozone layer in stratosphere is affected by chlorofluorocarbons?

What are primary and secondary pollutants in atmosphere?

Discuss Detergent as water pollutants?

Discuss photochemical smog and give its properties?

12th Class Chemistry Chapter 16 Short Questions Preparation - Set 2

What are the cause of water pollution?

Write the harmful effects of Chlorination of water?

Why ozone layer has depleting?

What is Biosphere?

Define environmental chemistry and what are the components of Environment?

What are the primary pollutants?

What is smog?What are the content of photochemical smog?

What does coagulation mean?

What is leachate?

Name the factors which affects the quantity of water?

12th Class Chemistry Chapter 16 Short Questions Preparation - Set 3

What are sulphate aerosols?

How gases in the atmosphere absorb?

What are primary and secondary pollutants in atmosphere?

Discuss Detergent as water pollutants?

What is biochemical oxygen demand?

Define environmental chemistry and what are the components of Environment?

How ozone layer in stratosphere is affected by chlorofluorocarbons?

What are the cause of water pollution?

What is Biosphere?

What is smog?What are the content of photochemical smog?

12th Class Chemistry Chapter 16 Preparation

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