Question # 1

When rain is accompanied by a thunderstorm, the collected rain water will have pH

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Slightly lower than that of rain water without thunderatorm

Slightly higher than that of rain water without thunderastorm

Uninfluenced by occurrence of thunderatorm

Which depends on amount of dust in air

The expected specific wastes of textile industry is

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Cloth residue

Fibre residue

Dyes

All above

Which of the following energy is trapped by the autotrophic organisms.

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Mechanical energy

Electrical energy

Radiant energy

Electronic energy

Fish die in water bodies polluted by sewage due to.

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Pathogens

Clogging of gills by silt

Reduction in dissolved oxygen

Foul smell

The expected specific waste of paper and allied products industry is.

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Chemicals

Paper and fibre residues

Links

All above

Which of the following is not chemical characteristics of water.

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pH

COD

BOD

Colour

The maximum noise level at which a man can work for 8 hours is.

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80 dB

70 dB

90 dB

60 dB

Which of the following pollutant result from roasting and heating processes.

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Dust

Smoke

Metal fumes

All above

Which among the following is secondary pollutant.

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CO

CO2

PAN

Aerosol

Long diseases are about four times more in urban areas as compared to rural areas. This is due to the presence of which of the following. in atmosphere.

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CO2

NO2

O2

N2

Which of the following is component of the ecosystem.

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Inorganic substances

ORGANIC Substances

Animal and plants only

All above

Eutrophication is process which involves

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Depletion of ozone layer

Increase in the concentration of ozone in water

Decrease in the concentration of dissolved oxygen in water by algae

Decrease in the level of SO2 in air

Ozone layer of stratosphere requires protection from indiscriminate use of.

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Fungicides, insecticides, bactericides and medicines

Aerosols and high flying jets

Atomic explosions and industrial wastes

Weather ballons

Which of the following substance is generally not considered an air polutant.

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CO

CO2

SO2

NO2

Which of the following disposal method is used for agriculture wastes.

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Dump

Landfill

Incineration

Open burning

All above

Which of the following is a non degradable pollutant.

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Long chain phenoiics

DDT

Mercuric salts

All above

Which of the following statement is not relevant with nitrous oxide.

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It is a colorless and odourless gas

It is non toxic gas

It is present in the atmosphere in higher concentration

It has high reactivity in the lower atmosphere

The range of sound pressure for uncomfortable level is.

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80 - 90 dB

100 - 120 dB

130-140 dB

All above

Which of the following statement is not true with respect to the role of matter undergoing decomposition.

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Decomposed matter increase soil fertility

They provide a texture which is favorable for plant growth

Organic compounds for complexes with mineral nutrients which enhance uptake by plants.

In high concentration the decomposition product may increase the photosynthesis

Disease caused by eating fish found in water contaminated with industrial waste having mercury is.

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Minamata disease

Bright's disease

Hashimoto's disease

Osteoaclerosis

Bioconversion of biomass can be used for.

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Heating purposes

Power production

Methane production

All of the above

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