318416
Which of the following statements about the depletion of ozone layer is correct?
1 The problem of ozone depletion is less serious at poles because \(\mathrm{NO}_{2}\) solidifies and is not available for consuming \(\mathrm{ClO}^{\bullet}\) radicals
2 The problem of ozone depletion is more serious at poles because ice crystals in the clouds over poles act as catalyst for photochemical reactions involving the decomposition of ozone of \(\mathrm{Cl}^{\bullet}\) and \(\mathrm{ClO}{ }^{\bullet}\) radicals
3 Freons, chlorofluorocarbons, are inert. Chemically, they do not react with ozone in stratosphere
4 Oxides of nitrogen also do not react with ozone in stratosphere.
Explanation:
Freons and chlorofluorocarbon find their way to stratosphere through without being destroyed in the troposphere due to their low reactivity. In the stratosphere the \(\mathrm{Cl}\) and \(\mathrm{Br}\) atoms are liberated from the parent compounds by the action of ultraviolet light e.g. \(\begin{aligned}& \mathrm{CF}_{2} \mathrm{Cl}_{2}+\mathrm{hv} \longrightarrow \mathrm{CF}_{2} \mathrm{Cl}+\mathrm{Cl} \\& \mathrm{CFCl}_{3}+\mathrm{hv} \longrightarrow \mathrm{CFCl}_{2}+\mathrm{Cl}\end{aligned}\) The \(\mathrm{Cl}\) radical atoms can destroy ozone molecules through a variety of catalytic cycles.
JEE - 2014
CHXI14:ENVIRONMENTAL CHEMISTRY
318417
Identify the incorrect statement from the following:
1 Oxides of nitrogen in the atmosphere can cause depletion of the ozone layer.
2 Ozone absorbs the intense ultraviolet radiation of Sun.
3 Depletion of ozone layer is because of its chemical reactions with chlorofluoro alkanes.
4 Ozone absorbs infrared radiation.
Explanation:
Ozone absorbs U.V radiation.
KCET - 2024
CHXI14:ENVIRONMENTAL CHEMISTRY
318418
In presence of \(\mathrm{O}_{3}\), which of the following pollution happens in day time?
1 Global warming
2 Reducing smog
3 Oxidizing smog
4 Acid Rain
Explanation:
Conceptual Questions
JEE - 2021
CHXI14:ENVIRONMENTAL CHEMISTRY
318419
Aerosol of a jet air liner which destroys the Ozone-layer of atmosphere is
1 \(\mathrm{CF}_{2} \mathrm{Cl}_{2}\)
2 \(\mathrm{CO}_{2}\) and \(\mathrm{SO}_{2}\)
3 \(\mathrm{SO}_{2}\)
4 \(\mathrm{NH}_{3}\) and \(\mathrm{CCl}_{4}\)
Explanation:
Conceptual Questions
CHXI14:ENVIRONMENTAL CHEMISTRY
318420
Major chemical species in the stratosphere is
318416
Which of the following statements about the depletion of ozone layer is correct?
1 The problem of ozone depletion is less serious at poles because \(\mathrm{NO}_{2}\) solidifies and is not available for consuming \(\mathrm{ClO}^{\bullet}\) radicals
2 The problem of ozone depletion is more serious at poles because ice crystals in the clouds over poles act as catalyst for photochemical reactions involving the decomposition of ozone of \(\mathrm{Cl}^{\bullet}\) and \(\mathrm{ClO}{ }^{\bullet}\) radicals
3 Freons, chlorofluorocarbons, are inert. Chemically, they do not react with ozone in stratosphere
4 Oxides of nitrogen also do not react with ozone in stratosphere.
Explanation:
Freons and chlorofluorocarbon find their way to stratosphere through without being destroyed in the troposphere due to their low reactivity. In the stratosphere the \(\mathrm{Cl}\) and \(\mathrm{Br}\) atoms are liberated from the parent compounds by the action of ultraviolet light e.g. \(\begin{aligned}& \mathrm{CF}_{2} \mathrm{Cl}_{2}+\mathrm{hv} \longrightarrow \mathrm{CF}_{2} \mathrm{Cl}+\mathrm{Cl} \\& \mathrm{CFCl}_{3}+\mathrm{hv} \longrightarrow \mathrm{CFCl}_{2}+\mathrm{Cl}\end{aligned}\) The \(\mathrm{Cl}\) radical atoms can destroy ozone molecules through a variety of catalytic cycles.
JEE - 2014
CHXI14:ENVIRONMENTAL CHEMISTRY
318417
Identify the incorrect statement from the following:
1 Oxides of nitrogen in the atmosphere can cause depletion of the ozone layer.
2 Ozone absorbs the intense ultraviolet radiation of Sun.
3 Depletion of ozone layer is because of its chemical reactions with chlorofluoro alkanes.
4 Ozone absorbs infrared radiation.
Explanation:
Ozone absorbs U.V radiation.
KCET - 2024
CHXI14:ENVIRONMENTAL CHEMISTRY
318418
In presence of \(\mathrm{O}_{3}\), which of the following pollution happens in day time?
1 Global warming
2 Reducing smog
3 Oxidizing smog
4 Acid Rain
Explanation:
Conceptual Questions
JEE - 2021
CHXI14:ENVIRONMENTAL CHEMISTRY
318419
Aerosol of a jet air liner which destroys the Ozone-layer of atmosphere is
1 \(\mathrm{CF}_{2} \mathrm{Cl}_{2}\)
2 \(\mathrm{CO}_{2}\) and \(\mathrm{SO}_{2}\)
3 \(\mathrm{SO}_{2}\)
4 \(\mathrm{NH}_{3}\) and \(\mathrm{CCl}_{4}\)
Explanation:
Conceptual Questions
CHXI14:ENVIRONMENTAL CHEMISTRY
318420
Major chemical species in the stratosphere is
318416
Which of the following statements about the depletion of ozone layer is correct?
1 The problem of ozone depletion is less serious at poles because \(\mathrm{NO}_{2}\) solidifies and is not available for consuming \(\mathrm{ClO}^{\bullet}\) radicals
2 The problem of ozone depletion is more serious at poles because ice crystals in the clouds over poles act as catalyst for photochemical reactions involving the decomposition of ozone of \(\mathrm{Cl}^{\bullet}\) and \(\mathrm{ClO}{ }^{\bullet}\) radicals
3 Freons, chlorofluorocarbons, are inert. Chemically, they do not react with ozone in stratosphere
4 Oxides of nitrogen also do not react with ozone in stratosphere.
Explanation:
Freons and chlorofluorocarbon find their way to stratosphere through without being destroyed in the troposphere due to their low reactivity. In the stratosphere the \(\mathrm{Cl}\) and \(\mathrm{Br}\) atoms are liberated from the parent compounds by the action of ultraviolet light e.g. \(\begin{aligned}& \mathrm{CF}_{2} \mathrm{Cl}_{2}+\mathrm{hv} \longrightarrow \mathrm{CF}_{2} \mathrm{Cl}+\mathrm{Cl} \\& \mathrm{CFCl}_{3}+\mathrm{hv} \longrightarrow \mathrm{CFCl}_{2}+\mathrm{Cl}\end{aligned}\) The \(\mathrm{Cl}\) radical atoms can destroy ozone molecules through a variety of catalytic cycles.
JEE - 2014
CHXI14:ENVIRONMENTAL CHEMISTRY
318417
Identify the incorrect statement from the following:
1 Oxides of nitrogen in the atmosphere can cause depletion of the ozone layer.
2 Ozone absorbs the intense ultraviolet radiation of Sun.
3 Depletion of ozone layer is because of its chemical reactions with chlorofluoro alkanes.
4 Ozone absorbs infrared radiation.
Explanation:
Ozone absorbs U.V radiation.
KCET - 2024
CHXI14:ENVIRONMENTAL CHEMISTRY
318418
In presence of \(\mathrm{O}_{3}\), which of the following pollution happens in day time?
1 Global warming
2 Reducing smog
3 Oxidizing smog
4 Acid Rain
Explanation:
Conceptual Questions
JEE - 2021
CHXI14:ENVIRONMENTAL CHEMISTRY
318419
Aerosol of a jet air liner which destroys the Ozone-layer of atmosphere is
1 \(\mathrm{CF}_{2} \mathrm{Cl}_{2}\)
2 \(\mathrm{CO}_{2}\) and \(\mathrm{SO}_{2}\)
3 \(\mathrm{SO}_{2}\)
4 \(\mathrm{NH}_{3}\) and \(\mathrm{CCl}_{4}\)
Explanation:
Conceptual Questions
CHXI14:ENVIRONMENTAL CHEMISTRY
318420
Major chemical species in the stratosphere is
318416
Which of the following statements about the depletion of ozone layer is correct?
1 The problem of ozone depletion is less serious at poles because \(\mathrm{NO}_{2}\) solidifies and is not available for consuming \(\mathrm{ClO}^{\bullet}\) radicals
2 The problem of ozone depletion is more serious at poles because ice crystals in the clouds over poles act as catalyst for photochemical reactions involving the decomposition of ozone of \(\mathrm{Cl}^{\bullet}\) and \(\mathrm{ClO}{ }^{\bullet}\) radicals
3 Freons, chlorofluorocarbons, are inert. Chemically, they do not react with ozone in stratosphere
4 Oxides of nitrogen also do not react with ozone in stratosphere.
Explanation:
Freons and chlorofluorocarbon find their way to stratosphere through without being destroyed in the troposphere due to their low reactivity. In the stratosphere the \(\mathrm{Cl}\) and \(\mathrm{Br}\) atoms are liberated from the parent compounds by the action of ultraviolet light e.g. \(\begin{aligned}& \mathrm{CF}_{2} \mathrm{Cl}_{2}+\mathrm{hv} \longrightarrow \mathrm{CF}_{2} \mathrm{Cl}+\mathrm{Cl} \\& \mathrm{CFCl}_{3}+\mathrm{hv} \longrightarrow \mathrm{CFCl}_{2}+\mathrm{Cl}\end{aligned}\) The \(\mathrm{Cl}\) radical atoms can destroy ozone molecules through a variety of catalytic cycles.
JEE - 2014
CHXI14:ENVIRONMENTAL CHEMISTRY
318417
Identify the incorrect statement from the following:
1 Oxides of nitrogen in the atmosphere can cause depletion of the ozone layer.
2 Ozone absorbs the intense ultraviolet radiation of Sun.
3 Depletion of ozone layer is because of its chemical reactions with chlorofluoro alkanes.
4 Ozone absorbs infrared radiation.
Explanation:
Ozone absorbs U.V radiation.
KCET - 2024
CHXI14:ENVIRONMENTAL CHEMISTRY
318418
In presence of \(\mathrm{O}_{3}\), which of the following pollution happens in day time?
1 Global warming
2 Reducing smog
3 Oxidizing smog
4 Acid Rain
Explanation:
Conceptual Questions
JEE - 2021
CHXI14:ENVIRONMENTAL CHEMISTRY
318419
Aerosol of a jet air liner which destroys the Ozone-layer of atmosphere is
1 \(\mathrm{CF}_{2} \mathrm{Cl}_{2}\)
2 \(\mathrm{CO}_{2}\) and \(\mathrm{SO}_{2}\)
3 \(\mathrm{SO}_{2}\)
4 \(\mathrm{NH}_{3}\) and \(\mathrm{CCl}_{4}\)
Explanation:
Conceptual Questions
CHXI14:ENVIRONMENTAL CHEMISTRY
318420
Major chemical species in the stratosphere is
318416
Which of the following statements about the depletion of ozone layer is correct?
1 The problem of ozone depletion is less serious at poles because \(\mathrm{NO}_{2}\) solidifies and is not available for consuming \(\mathrm{ClO}^{\bullet}\) radicals
2 The problem of ozone depletion is more serious at poles because ice crystals in the clouds over poles act as catalyst for photochemical reactions involving the decomposition of ozone of \(\mathrm{Cl}^{\bullet}\) and \(\mathrm{ClO}{ }^{\bullet}\) radicals
3 Freons, chlorofluorocarbons, are inert. Chemically, they do not react with ozone in stratosphere
4 Oxides of nitrogen also do not react with ozone in stratosphere.
Explanation:
Freons and chlorofluorocarbon find their way to stratosphere through without being destroyed in the troposphere due to their low reactivity. In the stratosphere the \(\mathrm{Cl}\) and \(\mathrm{Br}\) atoms are liberated from the parent compounds by the action of ultraviolet light e.g. \(\begin{aligned}& \mathrm{CF}_{2} \mathrm{Cl}_{2}+\mathrm{hv} \longrightarrow \mathrm{CF}_{2} \mathrm{Cl}+\mathrm{Cl} \\& \mathrm{CFCl}_{3}+\mathrm{hv} \longrightarrow \mathrm{CFCl}_{2}+\mathrm{Cl}\end{aligned}\) The \(\mathrm{Cl}\) radical atoms can destroy ozone molecules through a variety of catalytic cycles.
JEE - 2014
CHXI14:ENVIRONMENTAL CHEMISTRY
318417
Identify the incorrect statement from the following:
1 Oxides of nitrogen in the atmosphere can cause depletion of the ozone layer.
2 Ozone absorbs the intense ultraviolet radiation of Sun.
3 Depletion of ozone layer is because of its chemical reactions with chlorofluoro alkanes.
4 Ozone absorbs infrared radiation.
Explanation:
Ozone absorbs U.V radiation.
KCET - 2024
CHXI14:ENVIRONMENTAL CHEMISTRY
318418
In presence of \(\mathrm{O}_{3}\), which of the following pollution happens in day time?
1 Global warming
2 Reducing smog
3 Oxidizing smog
4 Acid Rain
Explanation:
Conceptual Questions
JEE - 2021
CHXI14:ENVIRONMENTAL CHEMISTRY
318419
Aerosol of a jet air liner which destroys the Ozone-layer of atmosphere is
1 \(\mathrm{CF}_{2} \mathrm{Cl}_{2}\)
2 \(\mathrm{CO}_{2}\) and \(\mathrm{SO}_{2}\)
3 \(\mathrm{SO}_{2}\)
4 \(\mathrm{NH}_{3}\) and \(\mathrm{CCl}_{4}\)
Explanation:
Conceptual Questions
CHXI14:ENVIRONMENTAL CHEMISTRY
318420
Major chemical species in the stratosphere is
