Energy & Environment Management Multiple Choice Questions on “Ozone Layer Depletion”.
1. Which of the following action takes place in the formation of ozone?
a) Action of daylight on oxygen
b) Action of daylight on nitrogen
c) Action of daylight on hydrogen
d) Action of daylight on phosphorous
Answer: a
Clarification: Ozone is made by the action of daylight on oxygen. It forms a layer 20 to 50 km over the surface of the earth. This action of formation of ozone over the surface of the earth takes place naturally within the atmosphere.
2. How many oxygen particles are there in every atom of ozone?
a) One
b) Two
c) Three
d) Four
Answer: c
Clarification: Ozone is a type of oxygen that has three particles in every atom. The formation of ozone is extremely slow. Ozone gas is extremely toxic with a powerful odor. This toxic gas is harmful to environment.
3. Why ozone within the upper environment is important?
a) Because it provides rain to the earth
b) It protects the earth from the sun’s harmful ultraviolet radiations
c) It provides good aesthetic view to the atmosphere
d) It protects the earth from floods
Answer: b
Clarification: Ozone within the upper environment is important to all existence because it protects the earth from the harmful ultraviolent radiations. The ozone layer within upper atmosphere absorbs the sun’s ultraviolent radiations and it prevents it to reach the earth surface.
4. Which of the following is threat to the ozonosphere?
a) Nitrogen dioxide
b) Oxygen
c) CFCs
d) Carbon dioxide
Answer: c
Clarification: Ozone layer within the atmosphere protects life on earth from harmful ultraviolent radiation from the sun. Chlorofluorocarbons (CFCs) that were used as refrigerants and aerosol spray propellants expose a threat to the ozonosphere.
5. Which one of the following is a result of ozone layer depletion?
a) Increase in the oxygen level
b) Increase in the nitrogen level
c) Increase in the phosphorous level
d) Increases in the carbon dioxide level
Answer: d
Clarification: The destruction of the ozone layer causes harm to positive vegetation and to plankton and accordingly affecting nature’s food chains and food webs. This in turn causes an increase in carbon dioxide due to the decrease in vegetation.
6. Ozone at a ground level considered as a pollutant.
a) True
b) False
Answer: a
Clarification: Ozone is taken into consideration as a pollutant at ground level and constitutes a health risk. The health risks like inflicting respiratory ailments like allergies and bronchitis and other health related issues.
7. In which layer of atmosphere ozone is very vital for all vegetation?
a) Upper atmosphere
b) Below atmosphere
c) Ground level
d) Below ground level
Answer: a
Clarification: Ozone in the upper atmosphere is vital to all forms of life as it protects the earth from harmful UV radiations. Ozone at ground level is considered a pollutant at ground level and causes harm to vegetation.
8. Which atom released when CFCs molecules are broken from UV radiations?
a) Oxygen
b) Chlorine
c) Nitrogen
d) Arsenic