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

Question # 1

What are the effects of dumping waste in sea and rivers.

Ans 1: Water covers more than 710% of the earth and is valuable source for food and mineral,Sea and rivers have long been used for dumping waste of industries and municipal discharges such as acids,refinery wastes,pesticides water,garbage and radioactive waste etc.

Question # 2

What is lithosphere?

Ans 1: It consists of rigid rocky crust of earth and extends to the depth of 100 km,The mantle and core are the heavy interior of the earth,making up most of the earth mass,The 99.5% mass of the lithosphere is made of 11 elements,which are oxygen,Si,Al,Fe,Ca,Na,K,Mg And Ti,H₂and P.The elements in trace amount are C,Mn,S,Ba,CI,Cr,F,Zr,Ni,Sr and V,These elements mostly occur in the form off mineral.

Question # 3

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

Ans 1: The word smog is combination of smoke and fog,Photochemical smog consists of higher concentration of oxidants like ozone and is also termed as oxidizing smog,The main reactants of photochemical smog are nitric oxide NO and unburnt hydrocarbons,Nitric acid is oxidizing to nitrogen dioxide within minutes to hours depending upon the concentration of pollutants gas.

Question # 4

What does coagulation mean?

Ans 1: The material which are present or suspended in the colloidal form in raw water are removed by coagulation process,The coagulation such as aluminium sulphate or alum is added to the raw water which cause the precipitated of suspended impurities.

Question # 5

What are the conditions for the formation of smog?

Ans 1:
1. There must be sufficient NO,hydrocarbons and volatile organic compound emitted by the vehicular traffic.
2. Sunlight ,so that some of the chemical reaction may occur at a rapid rate.
3. The movement of air mass must be little so that reaction are not disturbed,.

Question # 6

Detergents are threat to aquatic life.Explain.

Ans 1: Detergents are excessively used in industries and households as cleaning agents.The amount of disposed detergents in waste water is increasing day-by day,This waster water when discharge in river or sea,greatly affects the aquatic life.

Question # 7

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 # 8

What is effect of aeration on quality of raw water?

Ans 1: The quality of raw water is improved by aeration.In this process air is passed through water to remove the dissolved gasses such as foul smelling,organo-sulphur compound and volatile organic compound,Some of the organic material in the raw water which could be easily oxidized with air produce in the aeration process,.

Question # 9

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 # 10

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.

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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

What are the effects of dumping waste in sea and rivers.

What is lithosphere?

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

What does coagulation mean?

What are the conditions for the formation of smog?

Detergents are threat to aquatic life.Explain.

What are sulphate aerosols?

What is effect of aeration on quality of raw water?

How ozone layer in stratosphere is affected by chlorofluorocarbons?

What is the effect of Acid rain on earth?

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

What are the effects of dumping waste in sea and rivers.

What is lithosphere?

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

What does coagulation mean?

What are the conditions for the formation of smog?

Detergents are threat to aquatic life.Explain.

What are sulphate aerosols?

What is effect of aeration on quality of raw water?

How ozone layer in stratosphere is affected by chlorofluorocarbons?

What is the effect of Acid rain on earth?

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

What is leachate?

What are the cause of water pollution?

What are the conditions for the formation of smog?

What does coagulation mean?

How gases in the atmosphere absorb?

Discuss photochemical smog and give its properties?

What is effect of aeration on quality of raw water?

What is the effect of Acid rain on earth?

What are primary and secondary pollutants in atmosphere?

How detergent are treat to aquatic animal?

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

What is landfill?

What do you know about reducing smog and oxidizing smog?

What is the effect of Acid rain on earth?

Define environmental chemistry and what are the components of Environment?

Why ozone layer has depleting?

What is chemical oxygen demand?How it is measured?

What does coagulation mean?

What is recycling of raw material?

Define ecosystem.

Detergents are threat to aquatic life.Explain.

12th Class Chemistry Chapter 16 Preparation

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