CBSE
Multiple Choice QuestionsWhich of the following is a sink for CO?
Haemoglobin
Micro-organisms present in the soil
Oceans
Oceans
Which one of the following statements regarding photochemical smog is not correct?
Carbon monoxide does not play any role in photochemical smog formation
Photochemical smog is an oxidising agent in character
Photochemical smog is formed through photochemical reaction involving solar energy
Photochemical smog is formed through photochemical reaction involving solar energy
Green chemistry means such reactions which
produce colour during reactions
reduce the use and production of hazardous chemicals
are related to the depletion of the ozone layer
are related to the depletion of the ozone layer
Green chemistry means such reactions which
produce colour during reactions
reduce the use and production of hazardous chemicals
are related to the depletion of ozone layer
study the reactions in plants
Which one of the following is present as an active ingredient in bleaching powder for bleaching action?
Ca(OCl)2
CaO2Cl
CaCl2
CaOCl2
Which of the following statement(s) is not correct?
Suspended particulate matter is an important pollutant released by diesel vehicles
Soot particles (size < 5) cause fibrosis of the lung living
H2SO4 particulates have size of 500- 1000 nm
Photochemical smog is formed by oxides of sulphur, smoke and dust particles
Which one of the following is not a common component of photochemical smog?
Ozone
Acrolein
Peroxyacetyl nitrate
Peroxyacetyl nitrate
Which of the following region is coldest?
Stratosphere
Troposphere
Mesosphere
Thermosphere
Eutrophication of a lake means, it
is low is nutrients
is high in nutrients
has a high temperature
has excess amount of organic matter
Which oxide of nitrogen is not a common pollutant introduced into the atmosphere both due to natural and human activity?
N2O5
NO2
NO
N2O
