30900
Which one of the following is not a common component of Photochemical smog ?
1 Ozone
2 Acrolein
3 Peroxyacetyl nitrate
4 Chlorofluorocarbons
Explanation:
Among the given choloroflouro carbons are the compounds that are responsible for the ozone depletion which degrade ozone into molecular oxygen. It is not a component of photochemical smog while other are component of smog.
Environmental Chemistry
30902
Which one of the following statements regarding photochemical smog is not correct ?
1 Carbon monoxide does not play any role in photochemical smog formation.
2 Photochemical smog is an oxidising agent in character.
3 Photochemical smog is formed through photochemical reaction involving solar energy.
4 Photochemical smog does not cause irritation in eyes and throat.
Explanation:
Photochemical smog is formed in warm and sunny climate during day time by the action of sunlight on primary pollutants. It contains nitrogen oxides, ozone, PAN, etc., which are oxidising in nature. So, photochemical smog is an oxidising agent in character. It causes irritation in eyes and throat.
Environmental Chemistry
30904
Green chemistry means such reactions which
1 are related to the depletion of ozone layer
2 study the reactions in plants
3 produce colour during reactions
4 reduce the use and production of hazardous chemicals
Explanation:
Green chemistry means, the production of chemicals of our daily needs by using such reactions and chemical processes which neither use toxic chemicals, nor emit such chemicals into atmosphere. Thus, green chemistry is an alternative tool for reducing pollution.
Environmental Chemistry
30905
Which one of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?
1 Polyhalogens
2 Ferrocene
3 Fullerenes
4 Freons
Explanation:
Freons or chlorofluoro carbons are responsible for depletion of the ozone layer in the upper strata of the atmosphere. They are used as propellants, aerosol spray caps, refrigerants, fire fighting reagents, etc. They are stable and chemically inert compounds. They absorb UV-radiation and break down liberating free atomic chlorine which causes decomposition of ozone through free radical reaction. This results in the depletion of the ozone layer. Freons are mainly freon- \(1\left(C F Cl_{3}\right)\) and freon\(- 1\left(C F_{2} C l_{2}\right) .\) They form free radical of chlorine in presence of UV-radiation. Such free radical decomposes \(O_3\) as follows: \({C l^{*}+O_{3} \longrightarrow C lO^{*}+O_{2}}\) \({C l O^{*}+O_{3} \longrightarrow Cl^{*}+2 O_{2}}\) Chlorine free radical
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Environmental Chemistry
30900
Which one of the following is not a common component of Photochemical smog ?
1 Ozone
2 Acrolein
3 Peroxyacetyl nitrate
4 Chlorofluorocarbons
Explanation:
Among the given choloroflouro carbons are the compounds that are responsible for the ozone depletion which degrade ozone into molecular oxygen. It is not a component of photochemical smog while other are component of smog.
Environmental Chemistry
30902
Which one of the following statements regarding photochemical smog is not correct ?
1 Carbon monoxide does not play any role in photochemical smog formation.
2 Photochemical smog is an oxidising agent in character.
3 Photochemical smog is formed through photochemical reaction involving solar energy.
4 Photochemical smog does not cause irritation in eyes and throat.
Explanation:
Photochemical smog is formed in warm and sunny climate during day time by the action of sunlight on primary pollutants. It contains nitrogen oxides, ozone, PAN, etc., which are oxidising in nature. So, photochemical smog is an oxidising agent in character. It causes irritation in eyes and throat.
Environmental Chemistry
30904
Green chemistry means such reactions which
1 are related to the depletion of ozone layer
2 study the reactions in plants
3 produce colour during reactions
4 reduce the use and production of hazardous chemicals
Explanation:
Green chemistry means, the production of chemicals of our daily needs by using such reactions and chemical processes which neither use toxic chemicals, nor emit such chemicals into atmosphere. Thus, green chemistry is an alternative tool for reducing pollution.
Environmental Chemistry
30905
Which one of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?
1 Polyhalogens
2 Ferrocene
3 Fullerenes
4 Freons
Explanation:
Freons or chlorofluoro carbons are responsible for depletion of the ozone layer in the upper strata of the atmosphere. They are used as propellants, aerosol spray caps, refrigerants, fire fighting reagents, etc. They are stable and chemically inert compounds. They absorb UV-radiation and break down liberating free atomic chlorine which causes decomposition of ozone through free radical reaction. This results in the depletion of the ozone layer. Freons are mainly freon- \(1\left(C F Cl_{3}\right)\) and freon\(- 1\left(C F_{2} C l_{2}\right) .\) They form free radical of chlorine in presence of UV-radiation. Such free radical decomposes \(O_3\) as follows: \({C l^{*}+O_{3} \longrightarrow C lO^{*}+O_{2}}\) \({C l O^{*}+O_{3} \longrightarrow Cl^{*}+2 O_{2}}\) Chlorine free radical
30900
Which one of the following is not a common component of Photochemical smog ?
1 Ozone
2 Acrolein
3 Peroxyacetyl nitrate
4 Chlorofluorocarbons
Explanation:
Among the given choloroflouro carbons are the compounds that are responsible for the ozone depletion which degrade ozone into molecular oxygen. It is not a component of photochemical smog while other are component of smog.
Environmental Chemistry
30902
Which one of the following statements regarding photochemical smog is not correct ?
1 Carbon monoxide does not play any role in photochemical smog formation.
2 Photochemical smog is an oxidising agent in character.
3 Photochemical smog is formed through photochemical reaction involving solar energy.
4 Photochemical smog does not cause irritation in eyes and throat.
Explanation:
Photochemical smog is formed in warm and sunny climate during day time by the action of sunlight on primary pollutants. It contains nitrogen oxides, ozone, PAN, etc., which are oxidising in nature. So, photochemical smog is an oxidising agent in character. It causes irritation in eyes and throat.
Environmental Chemistry
30904
Green chemistry means such reactions which
1 are related to the depletion of ozone layer
2 study the reactions in plants
3 produce colour during reactions
4 reduce the use and production of hazardous chemicals
Explanation:
Green chemistry means, the production of chemicals of our daily needs by using such reactions and chemical processes which neither use toxic chemicals, nor emit such chemicals into atmosphere. Thus, green chemistry is an alternative tool for reducing pollution.
Environmental Chemistry
30905
Which one of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?
1 Polyhalogens
2 Ferrocene
3 Fullerenes
4 Freons
Explanation:
Freons or chlorofluoro carbons are responsible for depletion of the ozone layer in the upper strata of the atmosphere. They are used as propellants, aerosol spray caps, refrigerants, fire fighting reagents, etc. They are stable and chemically inert compounds. They absorb UV-radiation and break down liberating free atomic chlorine which causes decomposition of ozone through free radical reaction. This results in the depletion of the ozone layer. Freons are mainly freon- \(1\left(C F Cl_{3}\right)\) and freon\(- 1\left(C F_{2} C l_{2}\right) .\) They form free radical of chlorine in presence of UV-radiation. Such free radical decomposes \(O_3\) as follows: \({C l^{*}+O_{3} \longrightarrow C lO^{*}+O_{2}}\) \({C l O^{*}+O_{3} \longrightarrow Cl^{*}+2 O_{2}}\) Chlorine free radical
30900
Which one of the following is not a common component of Photochemical smog ?
1 Ozone
2 Acrolein
3 Peroxyacetyl nitrate
4 Chlorofluorocarbons
Explanation:
Among the given choloroflouro carbons are the compounds that are responsible for the ozone depletion which degrade ozone into molecular oxygen. It is not a component of photochemical smog while other are component of smog.
Environmental Chemistry
30902
Which one of the following statements regarding photochemical smog is not correct ?
1 Carbon monoxide does not play any role in photochemical smog formation.
2 Photochemical smog is an oxidising agent in character.
3 Photochemical smog is formed through photochemical reaction involving solar energy.
4 Photochemical smog does not cause irritation in eyes and throat.
Explanation:
Photochemical smog is formed in warm and sunny climate during day time by the action of sunlight on primary pollutants. It contains nitrogen oxides, ozone, PAN, etc., which are oxidising in nature. So, photochemical smog is an oxidising agent in character. It causes irritation in eyes and throat.
Environmental Chemistry
30904
Green chemistry means such reactions which
1 are related to the depletion of ozone layer
2 study the reactions in plants
3 produce colour during reactions
4 reduce the use and production of hazardous chemicals
Explanation:
Green chemistry means, the production of chemicals of our daily needs by using such reactions and chemical processes which neither use toxic chemicals, nor emit such chemicals into atmosphere. Thus, green chemistry is an alternative tool for reducing pollution.
Environmental Chemistry
30905
Which one of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?
1 Polyhalogens
2 Ferrocene
3 Fullerenes
4 Freons
Explanation:
Freons or chlorofluoro carbons are responsible for depletion of the ozone layer in the upper strata of the atmosphere. They are used as propellants, aerosol spray caps, refrigerants, fire fighting reagents, etc. They are stable and chemically inert compounds. They absorb UV-radiation and break down liberating free atomic chlorine which causes decomposition of ozone through free radical reaction. This results in the depletion of the ozone layer. Freons are mainly freon- \(1\left(C F Cl_{3}\right)\) and freon\(- 1\left(C F_{2} C l_{2}\right) .\) They form free radical of chlorine in presence of UV-radiation. Such free radical decomposes \(O_3\) as follows: \({C l^{*}+O_{3} \longrightarrow C lO^{*}+O_{2}}\) \({C l O^{*}+O_{3} \longrightarrow Cl^{*}+2 O_{2}}\) Chlorine free radical