Question # 1

Incineration is a process in which solid waste is burned at high temperature ranging from

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500 to 600°C

900 to 1000°C

1000 to 1100°C

600 to 700°C

During incineration temperature range of non-rotating chamber is

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900-1000C°

650-1100C°

950-1300C°

700-900C°

The ozone depletion in the stratophere is mainly due to the reaction of ozone with

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Freons

CFCs

Both A and B

None

Which is property of CO?

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Soluble in water

Insoluble in water

No toxic

Pole coloured

Exhaust fumes of cars contain which poisonous gas

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CH₄

C₂H₆

CO

All of these

Which of the following waster material is not recycled for use again

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paper

plastic

hides of animals

glass

Natural water is

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Pure

Impure

Acts as solute

Distilled

Water which forms scum with soap is called

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Hard water

Soft water

Distilled water

Un distilled water

Leaching of nutrients is due to

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Drying of soil

Combustion of soil

Acidification of soil

Neutralization of soil

The normal amount of overhead ozone is

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350 DU

450 DU

400 DU

300 DU

Three elements needed for the healthy growth of plants are

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N P K

N K C

N S P

N Ca P

The cause of minamata disease is the pollution of

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Arsenic (As) into atomosphere

Industrial waste having Hg

Organic waste in drinking H₂O

Oil spills in H₂O

Exposure to CO results in

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Headche

Fatigue

Unconsciousness

All of these

The range of UV-B is:

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320 to 400 nm

200 to 280 nm

280 to 320 nm

50 to 400 nm

The smog having high contents of SO₂is

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Neutral smog

Reducing smog

Oxidizing smog

Artificial smog

The incineration may reduce volume of wastes upto:

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1/4th

1/2nd

2/3rd

3/4th

Unit of ozone is?

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Debye

Dobson

Esu

Coulumb

Commonly used coagulants are ions of:

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Ferrous

Al

Cr

Ferric

Volcanoes produce SO₂:

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47%

57%

67%

77%

One of the environmental problem is the formation of oil slicks when oil is spilled form tankers in sea water. Which treatment is suitable to remove oil slicks

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Blow air

Add Na₂CO₃

Use a specially made sorbent having fluorine trapped in it

Use a sorbent having Al₂O₃trapped in it

Oxides of sulphur react in atmosphere by various reactions to form:

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sulphates

sulphites

sulphides

sulphate aerosols

Soil remediation means

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to make it suitable for cultivation of crops

to make it acidic

to make it alkeline

to add manure into it

The gases in the atmosphere are essential for sustaining life on earth. Thus oxygen is required for breathing. What for is carbon dioxide required

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To help plant to under go photosynthesis

To destroy nitrogen oxide from the atmosphere

To help to clean the atmosphere

To help in fixing of bacteria

An excellent source of energy without causing pollution is

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Fossil fuel

Sun

Petroleum

Nuclear reactor

Hydrosphere covers the surface of erath:

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70.8%

71.8%

72.8%

73.8%

The morality of the solution containing x grams ammonium sulfate in 500cm3 of the solution is 0.6 what is x?

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39.6

40.5

42.7

45.1

Hydrosphere includes

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Seas and rivers

Ocean & polar ice caps

Ground water

All of above

Fungicides are the pesticides which:

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Control the growth of fungus

Kills insects

Kills plants

Kill herb

A single chloride free radical of CFCs can destroy upto ozone molecules:

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10

100

1000

100000

Fungicides are the pesticides which

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Kill plants

Kill herbs

Kill insects

Control the growth of fungus

Which one of the following is not a component of environment

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Biosphere

Stratosphere

Hydrosphere

Lithosphere

The words smog is a combination of smoke and:

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fog

foke

fork

fizzy

Fresh water of total earth water is:

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1%

2%

3%

4%

Eleven elements made part of earth mass:

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97.5%

98.5%

99.5%

100%

The destructive distillation of coal gives three products. which of following is not the product of destructive distillation of coal?

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Coal tar

CO₂

Coal gas

Coke

Chloroform is carcinogenic:

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Heart

Lungs

Liver

Kidney

A single chloride free radical can destroy the ozone molecules

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100

100000

10000

10

Which of the following substance is not present in acid rain?

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Sulphuric acid

Nitric acid

Sulphurous acid

Acetic acid

Polar ice caps and glaciers consists total earth water:

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1%

2%

3%

4%

Photochemical smog consists of higher concentration of:

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Oxidants

Ozone

a & b

NO₃

As the number of carbon atoms increase the number of isomers also increase. The six carbon compound hexane has as many as:

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10 isomers

3 isomers

5 isomers

6 isomers

Hardness which can be removed by boiling is called

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Permanent hardness

Temporary hardness

Stiffness

Toughness

Contaminated soil can be cleaned by various methods. Which method is not used to clean the soil

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diffusion

convection

electrophoresis

chromatography

Water cover earth surface more than:

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50%

60%

70%

80%

HOCl is a compound:

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Polor inorganic

organic

Ionic

covalant

Which of the following is not a heavy industry?

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Iron

Fertilize

Paper

None

Ratio of hydrogen (H) and oxygen (O) in water molecule by volume is

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2: 1

1: 2

3: 1

4: 1

It is a biodegradable pollutant

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Salts of HG

DDt

Aluminum foil

Domestic fuel

DDT is a:

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Fungicide

Insecticide

Herbicide

All

Which of the following is a macronutrient?

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Boron

Iron

Copper

Carbon

Chemical equilibrium involving reactants and products in more than one phase is called:

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Homogeneous

Heterogeneous

Dynamic

Static

Forms of waste products:

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Heat

Smoke

Solid

All of these

Chlorofluorocarbons and aerosols are inert in sphere:

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troposphere

stratosphere

lithosphere

hydrosphere

Amount of fresh water used by agriculture is

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2%

23%

69%

97%

Which is not the condition for the formation of smog

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there must be sufficient NO gas

there must be sunlight to help photo chemical reactions to take place

air must be blowing swifty

there must be SO₂in the air

The temperature in the incineration of industrial and hazardons waster process had a range

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950 to 1300°C

500 to 900°C

250 to 500°C

900 to 1000°C

Which is the most toxic among the given?

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heavy metals

non-metals

Metals

Metalloids

Part of fresh water consumed in industry is:

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1%

2%

69%

23%

In incinerating the waste is burnt at

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1000°C

100°C

2000°C

1500°C