Correct4
Incorrect-1
Which of the following is a primary pollutant?
PAN
{tex} \mathrm { CO } {/tex}
Aldehydes
{tex} \mathrm { H } _ { 2 } \mathrm { SO } _ { 4 } {/tex}
Correct4
Incorrect-1
Choose the biodegradable pollutant out of the following.
DDT
Cow dung
Alkyl benzene sulphonate
Mercury
Correct4
Incorrect-1
Identify the incorrect statement from the following.
Oxides of nitrogen in the atmosphere can cause the depletion of ozone layer
Ozone absorbs infrared radiation
Depletion of ozone layer is because of its chemical reactions with chlorofluoroalkanes
Ozone absorbs the intense ultraviolet radiation of the sunlight
Correct4
Incorrect-1
Phosphate pollution is caused by
Sewage and agricultural fertilizers
Agricultural fertilizers only
Phosphate rocks and sewage
Weathering of phosphate rocks only
Correct4
Incorrect-1
Lead is considered as:
Water pollutant
Soil pollutant
Air pollutant
Radioactive pollutant
Correct4
Incorrect-1
Which of the following chemical, harmful to ozone, it released by chlorofluorocarbon?
Sulphur dioxide
Chlorine
Fluorine
Nitrogen dioxide
Correct4
Incorrect-1
Pick up the correct statement:
Classical smog is good for health but not photochemical smog
During formation of smog ozone level in atmosphere decreases
Classical smog has an oxidizing character while photochemical smog is reducing in character
Photochemical smog occurs in day time whereas the classical smog occurs in early morning
Correct4
Incorrect-1
Which one of the following dissolves more rapidly in haemoglobin than oxygen?
Ozone
{tex} \mathrm { SO } _ { 2 } {/tex}
{tex} \mathrm { N } _ { 2 } \mathrm { O } {/tex}
{tex} \mathrm { CO } {/tex}
Correct4
Incorrect-1
The type of pollution caused by spraying of DDT
Air, water, and soil
Air and water
Air
Air and soil
Correct4
Incorrect-1
Water pollution is caused by
Aeroplanes
Fly ash
Auto exhaust
Pesticides
Correct4
Incorrect-1
The greenhouse effect is caused by
{tex} \mathrm { CO } {/tex}
{tex} \mathrm { NO } _ { 2 } {/tex}
{tex} \mathrm { NO } {/tex}
{tex} \mathrm { CO } _ { 2 } {/tex}
Correct4
Incorrect-1
The substance having the largest concentration in acid rain?
{tex} \mathrm { H } _ { 2 } \mathrm { CO } _ { 3 } {/tex}
{tex} \mathrm { HNO } _ { 3 } {/tex}
{tex} \mathrm { HCl } {/tex}
{tex} \mathrm { H } _ { 2 } \mathrm { SO } _ { 4 } {/tex}
Correct4
Incorrect-1
Which of the following is not a consequence of greenhouse effect?
Climatic conditions will be changed
Plants in warmer climates with adequate rainfall would grow faster
The incidence of infectious diseases is likely to increase
Malaria will be controlled as the mosquitoes will not survive
Correct4
Incorrect-1
Presence of which fuel gas in exhaust fumes shows incomplete combustion of fuel?
Sulphur dioxide
Carbon monoxide and water vapour
Carbon monoxide
Nitrogen dioxide
Correct4
Incorrect-1
Formation of ozone in the upper atmosphere from oxygen takes place by the action of
Nitrogen oxides
Ultraviolet rays
Cosmic rays
Free radicals
Correct4
Incorrect-1
The chemical entities present in thermosphere of the atmosphere are
{tex} \mathrm { O } ^ { + 2 } , \mathrm { O } ^ { + } , \mathrm { NO } ^ { + } {/tex}
{tex} \mathrm { O } _ { 3 } {/tex}
{tex} \mathrm { N } _ { 2 } , \mathrm { O } _ { 2 } , \mathrm { CO } _ { 2 } , \mathrm { H } _ { 2 } \mathrm { O } {/tex}
{tex} \mathrm { O } 3 , \mathrm { O } _ { 2 } ^ { + } , \mathrm { O } _ { 2 } {/tex}
Correct4
Incorrect-1
What is not correct about greenhouse effect?
It results in global warming.
{tex} \mathrm { CO } _ { 2 } {/tex} is one of the main chemical species responsible for it.
It results in lowering of levels of ocean over the years.
{tex} \mathrm { CH } _ { 4 } , \mathrm { O } _ { 3 } , \mathrm { CFC } {/tex} also contribute to greenhouse effect.
Correct4
Incorrect-1
Which of the following belongs to secondary air pollutant?
{tex} \mathrm { CO } {/tex}
Hydrocarbon
Peroxyacetyl Nitrate
None of these
Correct4
Incorrect-1
Which of the following is not considered to be a pollutant?
{tex} \mathrm { NO } _ { 2 } {/tex}
{tex} \mathrm { CO } _ { 2 } {/tex}
{tex} \mathrm { O } _ { 3 } {/tex}
{tex} \mathrm { SO } _ { 3 } {/tex}
Correct4
Incorrect-1
Environmental pollution affects:
biotic components
human beings only
plants only
biotic and abiotic components of environment
Correct4
Incorrect-1
Persistent pesticides such as DDT pass into food chain and increase in amount per unit weight of organism due to their accumulation in fat. This phenomenon is called
biomagnification
biodegradation
biosynthesis
decomposition
Correct4
Incorrect-1
Negative soil pollutant is
converting fertile land into barren land by dumping ash, sludge, and garbage
reduction in soil productivity due to addition of pesticides and industrial wastes
reduction in soil productivity due to erosion and over use
None of the above
Correct4
Incorrect-1
Which of the following is the coldest region of atmosphere?
Thermosphere
Troposphere
Mesosphere
Stratosphere
Correct4
Incorrect-1
The biggest particulate matter is
{tex} \mathrm { HNO } _ { 3 } {/tex} droplets
Fly ash
{tex} \mathrm { H } _ { 2 } \mathrm { SO } _ { 4 } {/tex} droplets
Soot
Correct4
Incorrect-1
Which causes death of fish in water bodies polluted by sewage?
Decreases in DO
Pathogens
Clogging of gills by silt
Foul smell