Atmospheric Pollution
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CHXI14:ENVIRONMENTAL CHEMISTRY

318459 Classical smog occurs in places of

1 excess \(\mathrm{SO}_{2}\)
2 low temperature
3 high temperature
4 excess \(\mathrm{NH}_{3}\)
CHXI14:ENVIRONMENTAL CHEMISTRY

318460 Aerosols reduce primary productivity by

1 destroying leaf tissue
2 premature leaf fall
3 reducing crop yields
4 all of the above
CHXI14:ENVIRONMENTAL CHEMISTRY

318461 Which of the following statements about photochemical smog is wrong?

1 It has high concentration of oxidising agents.
2 It has low concentration of oxidising agent.
3 It can be controlled by controlling the release of \(\mathrm{NO}_{2}\), hydrocarbons, ozone etc.
4 Plantation of some plants like pinus helps in controlling photochemical smog.
NCERT Exemplar
CHXI14:ENVIRONMENTAL CHEMISTRY

318462 The statement which is not correct about control
of particulate pollution is:

1 In electrostatic precipitator, the particulates are made to acquire positive charge which are then attracted by the negative electrode and removed.
2 Gravity settling chamber removes larger particles from the air.
3 Cyclone collector removes fine particls in the diameter range 5-20 microns.
4 Wet scrubbers are used to wash away all types of particles.
CHXI14:ENVIRONMENTAL CHEMISTRY

318463 The biggest particulate matter is

1 \(\mathrm{HNO}_{3}\) droplets
2 soot
3 \(\mathrm{H}_{2} \mathrm{SO}_{4}\) droplets
4 fly ash
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CHXI14:ENVIRONMENTAL CHEMISTRY

318459 Classical smog occurs in places of

1 excess \(\mathrm{SO}_{2}\)
2 low temperature
3 high temperature
4 excess \(\mathrm{NH}_{3}\)
CHXI14:ENVIRONMENTAL CHEMISTRY

318460 Aerosols reduce primary productivity by

1 destroying leaf tissue
2 premature leaf fall
3 reducing crop yields
4 all of the above
CHXI14:ENVIRONMENTAL CHEMISTRY

318461 Which of the following statements about photochemical smog is wrong?

1 It has high concentration of oxidising agents.
2 It has low concentration of oxidising agent.
3 It can be controlled by controlling the release of \(\mathrm{NO}_{2}\), hydrocarbons, ozone etc.
4 Plantation of some plants like pinus helps in controlling photochemical smog.
NCERT Exemplar
CHXI14:ENVIRONMENTAL CHEMISTRY

318462 The statement which is not correct about control
of particulate pollution is:

1 In electrostatic precipitator, the particulates are made to acquire positive charge which are then attracted by the negative electrode and removed.
2 Gravity settling chamber removes larger particles from the air.
3 Cyclone collector removes fine particls in the diameter range 5-20 microns.
4 Wet scrubbers are used to wash away all types of particles.
CHXI14:ENVIRONMENTAL CHEMISTRY

318463 The biggest particulate matter is

1 \(\mathrm{HNO}_{3}\) droplets
2 soot
3 \(\mathrm{H}_{2} \mathrm{SO}_{4}\) droplets
4 fly ash
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CHXI14:ENVIRONMENTAL CHEMISTRY

318459 Classical smog occurs in places of

1 excess \(\mathrm{SO}_{2}\)
2 low temperature
3 high temperature
4 excess \(\mathrm{NH}_{3}\)
CHXI14:ENVIRONMENTAL CHEMISTRY

318460 Aerosols reduce primary productivity by

1 destroying leaf tissue
2 premature leaf fall
3 reducing crop yields
4 all of the above
CHXI14:ENVIRONMENTAL CHEMISTRY

318461 Which of the following statements about photochemical smog is wrong?

1 It has high concentration of oxidising agents.
2 It has low concentration of oxidising agent.
3 It can be controlled by controlling the release of \(\mathrm{NO}_{2}\), hydrocarbons, ozone etc.
4 Plantation of some plants like pinus helps in controlling photochemical smog.
NCERT Exemplar
CHXI14:ENVIRONMENTAL CHEMISTRY

318462 The statement which is not correct about control
of particulate pollution is:

1 In electrostatic precipitator, the particulates are made to acquire positive charge which are then attracted by the negative electrode and removed.
2 Gravity settling chamber removes larger particles from the air.
3 Cyclone collector removes fine particls in the diameter range 5-20 microns.
4 Wet scrubbers are used to wash away all types of particles.
CHXI14:ENVIRONMENTAL CHEMISTRY

318463 The biggest particulate matter is

1 \(\mathrm{HNO}_{3}\) droplets
2 soot
3 \(\mathrm{H}_{2} \mathrm{SO}_{4}\) droplets
4 fly ash
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CHXI14:ENVIRONMENTAL CHEMISTRY

318459 Classical smog occurs in places of

1 excess \(\mathrm{SO}_{2}\)
2 low temperature
3 high temperature
4 excess \(\mathrm{NH}_{3}\)
CHXI14:ENVIRONMENTAL CHEMISTRY

318460 Aerosols reduce primary productivity by

1 destroying leaf tissue
2 premature leaf fall
3 reducing crop yields
4 all of the above
CHXI14:ENVIRONMENTAL CHEMISTRY

318461 Which of the following statements about photochemical smog is wrong?

1 It has high concentration of oxidising agents.
2 It has low concentration of oxidising agent.
3 It can be controlled by controlling the release of \(\mathrm{NO}_{2}\), hydrocarbons, ozone etc.
4 Plantation of some plants like pinus helps in controlling photochemical smog.
NCERT Exemplar
CHXI14:ENVIRONMENTAL CHEMISTRY

318462 The statement which is not correct about control
of particulate pollution is:

1 In electrostatic precipitator, the particulates are made to acquire positive charge which are then attracted by the negative electrode and removed.
2 Gravity settling chamber removes larger particles from the air.
3 Cyclone collector removes fine particls in the diameter range 5-20 microns.
4 Wet scrubbers are used to wash away all types of particles.
CHXI14:ENVIRONMENTAL CHEMISTRY

318463 The biggest particulate matter is

1 \(\mathrm{HNO}_{3}\) droplets
2 soot
3 \(\mathrm{H}_{2} \mathrm{SO}_{4}\) droplets
4 fly ash
Join With Us for More Updates
CHXI14:ENVIRONMENTAL CHEMISTRY

318459 Classical smog occurs in places of

1 excess \(\mathrm{SO}_{2}\)
2 low temperature
3 high temperature
4 excess \(\mathrm{NH}_{3}\)
CHXI14:ENVIRONMENTAL CHEMISTRY

318460 Aerosols reduce primary productivity by

1 destroying leaf tissue
2 premature leaf fall
3 reducing crop yields
4 all of the above
CHXI14:ENVIRONMENTAL CHEMISTRY

318461 Which of the following statements about photochemical smog is wrong?

1 It has high concentration of oxidising agents.
2 It has low concentration of oxidising agent.
3 It can be controlled by controlling the release of \(\mathrm{NO}_{2}\), hydrocarbons, ozone etc.
4 Plantation of some plants like pinus helps in controlling photochemical smog.
NCERT Exemplar
CHXI14:ENVIRONMENTAL CHEMISTRY

318462 The statement which is not correct about control
of particulate pollution is:

1 In electrostatic precipitator, the particulates are made to acquire positive charge which are then attracted by the negative electrode and removed.
2 Gravity settling chamber removes larger particles from the air.
3 Cyclone collector removes fine particls in the diameter range 5-20 microns.
4 Wet scrubbers are used to wash away all types of particles.
CHXI14:ENVIRONMENTAL CHEMISTRY

318463 The biggest particulate matter is

1 \(\mathrm{HNO}_{3}\) droplets
2 soot
3 \(\mathrm{H}_{2} \mathrm{SO}_{4}\) droplets
4 fly ash