environmental issues🧯🚜🎾

Question 1

non biodegradable pollutants

Answer 1

causes biomagnificatuion

Question 2

primary pollutants

Answer 2

ddt , co, co2, NOx, hydrocarbon, ddt

Question 3

secondary pollutants

Answer 3

photo chem smog, london smog, pan, o3

troposphere - low— O3 bad
stratosphere - up— O3 good

Question 4

quantitative p.

Answer 4

occur in nature beyond threshold bcums toxic

co2, nox, sox

Question 5

qualitative p.

Answer 5

doent occur in nature produced by humans

fungicides, co, cn , ddt

Question 6

+ve pollution

Answer 6

add of undesirable substance

more fertilizers and land filling

Question 7

-ve polluton

Answer 7

loss of soil productivity

overgrazing, deforestation

Question 8

air pollution of two

Answer 8

gaseous

particulate— settlelable- size more than 10um
—- suspended- less than 10 um

Question 9

acid rain made of gases____ and forms acids

Answer 9

no2, so2+ h20 o2

hno3 h2so4

Question 10

LA smog / photo chem/ light induced smog/ oxidising

Answer 10

hydroc. + no +o2 high temp=

PAN+NO2 + O3 ( brown coloured air)

Question 11

london smog / sulphur smog/ coal smog / industrial smog / classical smog /reducing smog

Answer 11

sox + h20+ o2+ low temp/ night=

h2so4 (yellow )

Question 12

green house gases
CO₂
CH₄
CFC
N₂O

Answer 12

60%
20%
14%
6%

Question 13

green house gases

Answer 13

SO2 AND O3, water vapour , no2

Question 14

global mean temp has increased by __ in 20th century; mostly in last 3 decades

Answer 14

0.6 ° c

Question 15

w/o green house effect earths temp wouldve been

Answer 15

-18c tahn 15 c

Question 16

thickness of o3 layer

Answer 16

3- 4 mm

Question 17

uv-b damages

Answer 17

dna and mutation may occurs, high dose causes inflammtion of cornea c/as snow blindness, cataract, xeroderma pigmentosum

Question 18

ozone layer hole over antarctica

Answer 18

depletes btw late august and early october

Question 19

usually what gas not a pollutant

Answer 19

co2