Free ODP Regulations and Safe Handling Practices Questions and Answers

Question 1

The complete phase-out deadline of R-22 is by ______ in developed countries:

Accepted Answer

January 1, 2020

Answer

Explanation:
The most common deadline for the complete phase-out of R-22 in developed countries is January 1, 2020.

Question 2

Halons used in fire extinguishers contain ______ atoms:

Accepted Answer

Bromine

Answer

Explanation:
Halons used in fire extinguishers contain bromine atoms. The presence of bromine atoms in halons gives them their fire suppression capabilities. Bromine is highly reactive and can disrupt the chain reactions that occur during combustion, effectively suppressing the fire.

Question 3

CFCs have atmospheric lifetimes ranging from over ______.

Accepted Answer

50 to 100 years

Answer

Explanation:
CFCs have long atmospheric lifetimes due to their stability and low reactivity in the lower atmosphere (troposphere) ranging from decades to centuries. They are relatively inert and do not readily undergo chemical reactions that break them down. Once it reaches Stratosphere, it can be broken down by high-energy UV radiation from the Sun releasing chlorine atoms resulting in the depletion of the Ozone layer.

Question 4

The average ozone concentration in Earth's atmosphere as a whole is only about ______ parts per million:

Accepted Answer

0.3

Answer

Explanation:
For every million air molecules in the atmosphere, approximately 0.3 of them are ozone molecules. Ozone concentration can vary depending on the altitude and location within the atmosphere. The highest concentrations of ozone are typically found in the ozone layer within the stratosphere

Question 5

The ozone layer absorbs the sun's which of following radiation and prevents it from falling on the earth's surface:

Accepted Answer

UV radiation

Answer

Explanation:
The ozone layer absorbs the majority of the Sun's harmful ultraviolet (UV) radiation and prevents most of it from reaching the Earth's surface. The UV radiation from the Sun causes the splitting of oxygen molecules, and the resulting oxygen atoms react with other oxygen molecules to form ozone. This process is known as the ozone-oxygen cycle.

ODP - Ozone Layer Depletion Practice Test

ODP - Ozone Layer Depletion Practice Test

Free ODP Regulations and Safe Handling Practices Questions and Answers