Photochemical smog occurs in warm dry and sunny climate. One of the following is not among die components of photochemical smog. Identity it.
[D] Unsaturated hydrocarbon
The main element of smog is
[A] O3 and PAN
[D] PPN and PBN
The biggest partial late of matter is
[A] HNO3 droplets
[C] H2SO4 droplets
[D] Fly ash
Which of the following statements is NOT true about classical smog?
[A] Its main components are produced by action of sunlight on emissions of automobiles and factories.
[B] Produced in cold and humid climate.
[C] It contains compounds of reducing nature.
[D] It contains smoke, fog and SO2.
Which of the following statements is wrong?
[A] Ozone is not responsible for greenhouse effect
[B] Ozone can oxidise sulphur dioxide present in atmosphere to SO3
[C] Ozone hole is thinning of ozone layer present in stratosphere.
[D] Ozone is produced in upper stratosphere by die action of UV rays on oxygen.
The gaseous envelope around the earth is known as atmosphere.The lowest layer of this is extended up to 10 km from sea level. This laver is
Which of the followirng statements about photochemical smog is wrong?
[A] It has high concentration of oxidising agents.
[B] It lias low concentration of oxidising agents.
[C] It can be controlled by controlling the release of NO2 hydrocarbons, ozone, etc.
[D] Plantation of some plants like Pirius helps in controlling the photochemical smog.
Dinitrogen and dioxygen are the main constituents of air but these do not react with each other to form oxides of nitrogen because
[A] the reaction is endothermic and require very high temperature
[B] the reaction can be initiated only in presence of catalyst.
[C] oxides of nitrogen are unstable.
[D] N2 and O2 are unreactive.
The pollutions that come directly in the air from sources are called primary pollutions. Primary pollutants are sometimes converted into secondary pollutants. Which of the following belongs to secondary pollutants?
[C] Peroxyacetyl nitrate
Which one of the following statements regarding photochemical smog is not correct?
[A] Carbon monoxide does not play any role in photochemical smog formation.
[B] Photochemical smog is an oxidising agent in character.
[C] Photochemical smog is formed through photochemical reaction involving solar energy.
[D] Photochemical smog does not cause irritation in eyes and throat
The uppermost region of the aunosphere is called
The region that is greatly afftected by air pollution is
The quantity of CO2 in atmosphere is
The substance that is not regarded of a pollutant is
The gas responsible tor ozone depletion is
[A] NO and Freons