Atmospheric Pollution
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CHXI14:ENVIRONMENTAL CHEMISTRY

318399 The false statement among the followings:

1 The average residence time of \(\mathrm{NO}\) is one month.
2 Limestone acts as a sink for \(\mathrm{SO}_{\mathrm{x}}\).
3 \(\mathrm{SO}_{\mathrm{x}}\) can be removed from flue gases by passing through a solution of citrate ions.
4 Ammonia acts as a sink for \(\mathrm{NO}_{\mathrm{x}}\).
CHXI14:ENVIRONMENTAL CHEMISTRY

318400 Melting of "ice caps" may be due to

1 Depletion of ozone layer
2 Global warming
3 Acid rain
4 All the above
CHXI14:ENVIRONMENTAL CHEMISTRY

318401 Dinitrogen and dioxygen are main constituents of air but these do not react with each other to form oxides of nitrogen because ____.

1 the reaction is endothermic and requires very high temperature.
2 the reaction can be initiated only in presence of a catalyst.
3 oxides of nitrogen are unstable.
4 \(\mathrm{N}_{2}\) and \(\mathrm{O}_{2}\) are unreactive.
NCERT Exemplar
CHXI14:ENVIRONMENTAL CHEMISTRY

318402 Among the following, the incorrect statement is

1 Troposphere maintains heat balance
2 Sound waves cannot propagate in mesosphere
3 Ozone layer is present in troposphere
4 Gases are ionised in the thermosphere.
CHXI14:ENVIRONMENTAL CHEMISTRY

318403 Roasting of sulphides gives the gas \({\text{X}}\) as a by product. This is a colorless gas with choking smell of burnt sulphur and causes great damage to respiratory organs as it results in acid rain. Its aqueous solution is acidic and acts as a reducing agent, and its acid has never been isolated. The gas \(\mathrm{X}\) is

1 \(\mathrm{SO}_{2}\)
2 \(\mathrm{CO}_{2}\)
3 \(\mathrm{SO}_{3}\)
4 \(\mathrm{H}_{2} \mathrm{~S}\)
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CHXI14:ENVIRONMENTAL CHEMISTRY

318399 The false statement among the followings:

1 The average residence time of \(\mathrm{NO}\) is one month.
2 Limestone acts as a sink for \(\mathrm{SO}_{\mathrm{x}}\).
3 \(\mathrm{SO}_{\mathrm{x}}\) can be removed from flue gases by passing through a solution of citrate ions.
4 Ammonia acts as a sink for \(\mathrm{NO}_{\mathrm{x}}\).
CHXI14:ENVIRONMENTAL CHEMISTRY

318400 Melting of "ice caps" may be due to

1 Depletion of ozone layer
2 Global warming
3 Acid rain
4 All the above
CHXI14:ENVIRONMENTAL CHEMISTRY

318401 Dinitrogen and dioxygen are main constituents of air but these do not react with each other to form oxides of nitrogen because ____.

1 the reaction is endothermic and requires very high temperature.
2 the reaction can be initiated only in presence of a catalyst.
3 oxides of nitrogen are unstable.
4 \(\mathrm{N}_{2}\) and \(\mathrm{O}_{2}\) are unreactive.
NCERT Exemplar
CHXI14:ENVIRONMENTAL CHEMISTRY

318402 Among the following, the incorrect statement is

1 Troposphere maintains heat balance
2 Sound waves cannot propagate in mesosphere
3 Ozone layer is present in troposphere
4 Gases are ionised in the thermosphere.
CHXI14:ENVIRONMENTAL CHEMISTRY

318403 Roasting of sulphides gives the gas \({\text{X}}\) as a by product. This is a colorless gas with choking smell of burnt sulphur and causes great damage to respiratory organs as it results in acid rain. Its aqueous solution is acidic and acts as a reducing agent, and its acid has never been isolated. The gas \(\mathrm{X}\) is

1 \(\mathrm{SO}_{2}\)
2 \(\mathrm{CO}_{2}\)
3 \(\mathrm{SO}_{3}\)
4 \(\mathrm{H}_{2} \mathrm{~S}\)
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CHXI14:ENVIRONMENTAL CHEMISTRY

318399 The false statement among the followings:

1 The average residence time of \(\mathrm{NO}\) is one month.
2 Limestone acts as a sink for \(\mathrm{SO}_{\mathrm{x}}\).
3 \(\mathrm{SO}_{\mathrm{x}}\) can be removed from flue gases by passing through a solution of citrate ions.
4 Ammonia acts as a sink for \(\mathrm{NO}_{\mathrm{x}}\).
CHXI14:ENVIRONMENTAL CHEMISTRY

318400 Melting of "ice caps" may be due to

1 Depletion of ozone layer
2 Global warming
3 Acid rain
4 All the above
CHXI14:ENVIRONMENTAL CHEMISTRY

318401 Dinitrogen and dioxygen are main constituents of air but these do not react with each other to form oxides of nitrogen because ____.

1 the reaction is endothermic and requires very high temperature.
2 the reaction can be initiated only in presence of a catalyst.
3 oxides of nitrogen are unstable.
4 \(\mathrm{N}_{2}\) and \(\mathrm{O}_{2}\) are unreactive.
NCERT Exemplar
CHXI14:ENVIRONMENTAL CHEMISTRY

318402 Among the following, the incorrect statement is

1 Troposphere maintains heat balance
2 Sound waves cannot propagate in mesosphere
3 Ozone layer is present in troposphere
4 Gases are ionised in the thermosphere.
CHXI14:ENVIRONMENTAL CHEMISTRY

318403 Roasting of sulphides gives the gas \({\text{X}}\) as a by product. This is a colorless gas with choking smell of burnt sulphur and causes great damage to respiratory organs as it results in acid rain. Its aqueous solution is acidic and acts as a reducing agent, and its acid has never been isolated. The gas \(\mathrm{X}\) is

1 \(\mathrm{SO}_{2}\)
2 \(\mathrm{CO}_{2}\)
3 \(\mathrm{SO}_{3}\)
4 \(\mathrm{H}_{2} \mathrm{~S}\)
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CHXI14:ENVIRONMENTAL CHEMISTRY

318399 The false statement among the followings:

1 The average residence time of \(\mathrm{NO}\) is one month.
2 Limestone acts as a sink for \(\mathrm{SO}_{\mathrm{x}}\).
3 \(\mathrm{SO}_{\mathrm{x}}\) can be removed from flue gases by passing through a solution of citrate ions.
4 Ammonia acts as a sink for \(\mathrm{NO}_{\mathrm{x}}\).
CHXI14:ENVIRONMENTAL CHEMISTRY

318400 Melting of "ice caps" may be due to

1 Depletion of ozone layer
2 Global warming
3 Acid rain
4 All the above
CHXI14:ENVIRONMENTAL CHEMISTRY

318401 Dinitrogen and dioxygen are main constituents of air but these do not react with each other to form oxides of nitrogen because ____.

1 the reaction is endothermic and requires very high temperature.
2 the reaction can be initiated only in presence of a catalyst.
3 oxides of nitrogen are unstable.
4 \(\mathrm{N}_{2}\) and \(\mathrm{O}_{2}\) are unreactive.
NCERT Exemplar
CHXI14:ENVIRONMENTAL CHEMISTRY

318402 Among the following, the incorrect statement is

1 Troposphere maintains heat balance
2 Sound waves cannot propagate in mesosphere
3 Ozone layer is present in troposphere
4 Gases are ionised in the thermosphere.
CHXI14:ENVIRONMENTAL CHEMISTRY

318403 Roasting of sulphides gives the gas \({\text{X}}\) as a by product. This is a colorless gas with choking smell of burnt sulphur and causes great damage to respiratory organs as it results in acid rain. Its aqueous solution is acidic and acts as a reducing agent, and its acid has never been isolated. The gas \(\mathrm{X}\) is

1 \(\mathrm{SO}_{2}\)
2 \(\mathrm{CO}_{2}\)
3 \(\mathrm{SO}_{3}\)
4 \(\mathrm{H}_{2} \mathrm{~S}\)
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CHXI14:ENVIRONMENTAL CHEMISTRY

318399 The false statement among the followings:

1 The average residence time of \(\mathrm{NO}\) is one month.
2 Limestone acts as a sink for \(\mathrm{SO}_{\mathrm{x}}\).
3 \(\mathrm{SO}_{\mathrm{x}}\) can be removed from flue gases by passing through a solution of citrate ions.
4 Ammonia acts as a sink for \(\mathrm{NO}_{\mathrm{x}}\).
CHXI14:ENVIRONMENTAL CHEMISTRY

318400 Melting of "ice caps" may be due to

1 Depletion of ozone layer
2 Global warming
3 Acid rain
4 All the above
CHXI14:ENVIRONMENTAL CHEMISTRY

318401 Dinitrogen and dioxygen are main constituents of air but these do not react with each other to form oxides of nitrogen because ____.

1 the reaction is endothermic and requires very high temperature.
2 the reaction can be initiated only in presence of a catalyst.
3 oxides of nitrogen are unstable.
4 \(\mathrm{N}_{2}\) and \(\mathrm{O}_{2}\) are unreactive.
NCERT Exemplar
CHXI14:ENVIRONMENTAL CHEMISTRY

318402 Among the following, the incorrect statement is

1 Troposphere maintains heat balance
2 Sound waves cannot propagate in mesosphere
3 Ozone layer is present in troposphere
4 Gases are ionised in the thermosphere.
CHXI14:ENVIRONMENTAL CHEMISTRY

318403 Roasting of sulphides gives the gas \({\text{X}}\) as a by product. This is a colorless gas with choking smell of burnt sulphur and causes great damage to respiratory organs as it results in acid rain. Its aqueous solution is acidic and acts as a reducing agent, and its acid has never been isolated. The gas \(\mathrm{X}\) is

1 \(\mathrm{SO}_{2}\)
2 \(\mathrm{CO}_{2}\)
3 \(\mathrm{SO}_{3}\)
4 \(\mathrm{H}_{2} \mathrm{~S}\)