Question # 1

Poisoning of CO can be reveresed by giving oxygen at pressure:

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low

least

medium

High

Diseases like dysentery, typhoid and hepatitis are caused by mixing of in water:

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Live stock wastes

Oil spilage

detergents

pesticides

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

CFCs are mainly used in industries due to

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Low cost

Gaseous nature

High reactivity

Un stability

Which gases are produced from landfills?

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NH₃

H₂S

N₂

All of these

White marble buildings are effected by?

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O₂

SO₂

CI₂

CFC_s

Nitrogen percentage in atmosphere is:

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76%

77%

78%

79%

Which of the following is not the required condition for the formation of smog

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Sufficient NO

Sunlight

Less movement of air

Winds

Residence time of methane in the atmosphere is

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3 - 7 days

2 -3 days

3 - 7 years

2 - 3 years

Many petroleum products are:

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coloured

colourless

testy

poisoinous

Ozone is present in layer around earth:

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atmosphere

tropospher

stratosphere

thermosphere

Troposphere extends upto km:

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0-15 km

10-15 km

15-40 km

The most important pesticides are:

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Herbicides

Insecticides

Fungicides

All

Synthetic organic pesticides formulated nowadays are more then:

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One thousand

Ten thousand

Two thousands

Twenty thousand

During thunderstorms, water dissolves

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Dust particles

HCl

Nitric acid

Clouds

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

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

NO and NO₂gases in atmosphere are represented by

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NO

NO₄

NO_x

N_xO_y

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

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Glasses

Paper

Plastic toys

Hides of animals

Which is the most toxic among the given?

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heavy metals

non-metals

Metals

Metalloids

Lithosphere has amount of silicon

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35.30%

27.72%

40.01%

21.13%

a hole used to dump the municipal wastes is called:

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landfill

effluents

leachate

inclneration

When chlorofluoro carbon are subjected to U.V they form

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Cations

Aninons

Free radicals

None of these

The disposal of domestic refuse, commercial and industrial solid wastes are studied under the title

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Solid waste management

Waste management

Solid management

Semisolid management

Splitting of spectral lines when atoms are subjected to strong electric field is called:

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Compton effect

Stark effect

Zeeman effect

Photoelectric effect

Which heavy metals do not have any safe limits

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As

Hg

Cr

All of these

For incineration temperature range is (in ^oC)

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700-800

800-900

900-1000

1000-1100

Major cause of SO2 on global scale is

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Volcanoes

Electric sparks

Combustion

All

The amount of Si in the lithosphere is about

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27.72%

30.35%

35.30%

40.21%

The incineration may reduce volume of wastes upto:

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1/4th

1/2nd

2/3rd

3/4th

Chemicals used to kill herbs are:

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Herbicides

Insecticides

Pesticides

Fungicides

Detergent greatly effects the

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Aquatic life

Modern life

Terrestrial life

Plants life

Depletion of ozone is more during the month:

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Jan-March

April-Jun

July-Aug

Sept-Nov

Photo chemical smog contains ______ as main reactants

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Nitrons oxide and unburnt hydrocarbons

Nilric oxide and unburnt hydrocarbons

No and burnt hydrocarbons

N₂O and burnt hydrocarbons

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