Environmental Pollution Quiz

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What is the definition of pollution?

Imbalance of naturally occurring components in the environment

What are the two types of pollution based on origin?

Primary and secondary air pollutants

What is air pollution described as?

The imbalance in quality of air so as to cause adverse effects on the living organisms existing on earth

What is a pollutant?

A substance or energy that causes pollution Signup and view all the answers

What are the categories of air pollutants based on state of matter?

Not specified in the given text, but it is commonly classified into solid, liquid, and gaseous pollutants Signup and view all the answers

How many types of pollution are mentioned in the text?

7 (Air, Water, Soil, Marine, Noise, Thermal, and Nuclear hazards) Signup and view all the answers

What is the main reason for water pollution?

Sewage and industrial disposals, i.e., effluents Signup and view all the answers

What is the significance of pH in determining water pollution?

It gives the degree of acidity or alkalinity of polluted water Signup and view all the answers

What is Biological Oxygen Demand (BOD) and what is its significance in water pollution?

It is the quantity of oxygen utilized by microorganisms at a temperature of 20oC, and it indicates the level of oxygen required for living organisms Signup and view all the answers

Why is oxygen necessary for living organisms in water?

Because it is necessary for their survival Signup and view all the answers

What is the ideal temperature for measuring Biological Oxygen Demand (BOD)?

20oC Signup and view all the answers

What is the typical duration for measuring Biological Oxygen Demand (BOD)?

5 days Signup and view all the answers

What is the effect of industrial water pollution on the river Godavari?

Industrial water pollution affects the entire water ecosystem, causing enormous damage to fishes, prawns, and freshwater animals. Signup and view all the answers

What are the symptoms of Minamata disease?

The symptoms of Minamata disease include ataxia, numbness in the hands and feet, general muscle weakness, narrowing of the field of vision, and damage to hearing and speech. Signup and view all the answers

What is the permissible limit of fluoride in water?

The permissible limit of fluoride in water is 1 ppm. Signup and view all the answers

What is the primary cause of Minamata disease?

The primary cause of Minamata disease is severe mercury poisoning. Signup and view all the answers

What is the significance of the year 1956 in the context of Minamata disease?

Minamata disease was first discovered in Minamata city in Japan in 1956. Signup and view all the answers

What is the impact of industrial effluents on the aquatic ecosystem?

Industrial effluents affect the entire water ecosystem, causing damage to fishes, prawns, and freshwater animals. Signup and view all the answers

What is the role of the Tympanum in the human ear?

The Tympanum, or ear drum, receives vibrations produced by sound to a limited extent. Signup and view all the answers

What is the difference between sound and noise?

Sound is a vibration that can be heard clearly, whereas noise is a mixed vibration that cannot be heard clearly. Signup and view all the answers

What is the maximum frequency of sound that the human ear can perceive?

The human ear can perceive about 20,000 Hertz of sound. Signup and view all the answers

What is an example of noise in everyday life?

An example of noise is the mixed sounds in an office, such as someone talking on a mobile phone, a phone ringing, and loud conversations. Signup and view all the answers

Can the volume of noise be increased or decreased?

No, the volume of noise cannot be increased or decreased. Signup and view all the answers

What is noise pollution?

Noise pollution occurs when unwanted sounds are produced through various sources. Signup and view all the answers

What are the primary sources of soil pollution mentioned in the text?

Rupture of underground storage tanks, application of pesticides, and percolation of contaminated surface water to subsurface strata Signup and view all the answers

What are the most common chemicals involved in causing soil pollution?

Petroleum hydrocarbons, solvents, pesticides, lead and other heavy metals Signup and view all the answers

How can agricultural activities contribute to soil pollution?

Excess application of pesticides, herbicides, or fertilizer Signup and view all the answers

What is a common consequence of industrial waste disposal?

Discharge of industrial waste into the soil Signup and view all the answers

What is a type of soil pollution that occurs when contaminated water moves downward through the soil?

Percolation of contaminated water into the soil Signup and view all the answers

What is a type of soil pollution that occurs when waste from landfills seeps into the soil?

Seepage from a landfill Signup and view all the answers