Ozone Layer and Its Depletion

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What is the primary function of ozone in the atmosphere?

To protect us from ultra violet radiation (correct)

To cause depletion of oxygen radical

To react with tissues and cause breathing problems

To produce ultra violet radiation

What is the main cause of ozone depletion?

Increase in sunlight

Manmade processes releasing gases into the atmosphere (correct)

Increase in oxygen radical

Decrease in ultra violet radiation

What is the effect of ozone on human health?

It increases the resistance power of the human body

It has no effect on human health

It causes cold and pneumonia (correct)

It only affects the lungs

What is the name of the satellite that took a picture of the ozone layer in 1987?

NIMBUS-7 Signup and view all the answers

What is the main component of smog?

Fog and smoke Signup and view all the answers

In which year were the first smog-related deaths recorded in London?

1873 Signup and view all the answers

What is the primary cause of the severe smog that covered Los Angeles in the 1940s?

Burning of fossil fuels Signup and view all the answers

What is the pH range of acid rain experienced in Europe and parts of West Asia in 1958?

4.5 to 5.0 (acidic) Signup and view all the answers

What is the estimated number of trees that can be saved by recovering one tonne of paper?

17 trees Signup and view all the answers

What is the average number of times a human being breathes in a day?

22000 Signup and view all the answers

What is the primary goal of reforestation and restoring grass cover?

To control land loss and soil erosion Signup and view all the answers

What percentage of the gaseous components of the atmosphere is found in the troposphere?

70% Signup and view all the answers

What is the recommended approach to managing industrial waste?

Treating waste physically, chemically, and biologically Signup and view all the answers

What is a major consequence of marine pollution?

Damage to the marine environment Signup and view all the answers

What is the primary source of SOx and NOx in the atmosphere?

Burning of fossil fuels Signup and view all the answers

What is the name of the layer of the atmosphere that sustains life and saves it from unfriendly environment?

Atmosphere Signup and view all the answers

What are the two primary sources of marine pollution?

Land and sea Signup and view all the answers

What is a significant pollutant that can destroy the marine environment?

Oil Signup and view all the answers

What is a symptom of diseases caused by fluorosis?

Back pain and cannot easily bend Signup and view all the answers

What is the purpose of adding chlorine to drinking water?

To kill bacteria, fungi, and other microbes Signup and view all the answers

What is the recommended amount of chlorine to add to 1 liter of water for perfect disinfection?

30-40 mg Signup and view all the answers

What is the definition of soil pollution?

The presence of toxic chemicals in soil, in high enough concentrations to pose a risk to human health and/or the ecosystem Signup and view all the answers

Why is it important to prevent pesticides and insecticides from being used near water sources?

To prevent water pollution Signup and view all the answers

What is the effect of fluorosis on teeth?

Teeth develop a brown coating on the enamel Signup and view all the answers

What is the primary goal of lubricating machines in relation to noise pollution?

To reduce the noise produced by machines Signup and view all the answers

What is the second step in controlling noise pollution if it cannot be controlled at its source?

Preventing the transmission of noise Signup and view all the answers

What is the main effect of thermal pollution on aquatic life?

It makes the water harmful to human, animal, or aquatic life Signup and view all the answers