Environmental Chemistry

Question 1

Tropospheric gas which evolve in volcanic erruption

Answer 1

Co2

Question 2

Gas only in troposphere

Answer 2

Co2

Question 3

Main reason for global warming

Answer 3

Co2

Question 4

Name the green house gases
Hint H2o se muh dho o2 lo co2 vahar karke ch4 jalake cfc chhak mai pahuncho

Answer 4

H2o vapour,o2,co2,no2,cfc,Ch4

Question 5

What is particulate pollutant

Answer 5

Fog dust mist etc
Means particle suspended in a medium causing pollution

Question 6

Cool pw in particulate pollutant

Answer 6

Classical,photochemical

Question 7

InCool Pw which is reducing smog and which is oxidizing smog

Answer 7

Cool pw

Question 8

In cool pw which have so2 and which have light and No2

Answer 8

Cool pw

Question 9

Ch4+o3 gives

Answer 9

Formaldehyde, acraldehyde,peroxy acetylnitrate

Question 10

The common component of photochemical smog

Answer 10

Ozone No2 Acrolein peroxy acetylnitrate Formaldehyde

Question 11

Ozone which sphere pollution

Answer 11

Stratosphere

Question 12

Ph of rain water nd when it is called acid rain

Answer 12

5.6 and less than 5.6

Question 13

Does excessive plankton growth causes waterpollution

Answer 13

Yes

Question 14

The ppm of o2 in cold water and air

Answer 14

10 and 200000

Question 15

At which concentration fish growth becomes inhibited

Answer 15

Below vicks yaani six

Question 16

Bod of clean water and highly polluted water

Answer 16

<5 >17ppm

Question 17

Why heavy metals are toxic for human beings

Answer 17

We can’t excrete them

Question 18

Polychlorinated biphenyls are - and -

Answer 18

Ckeansing agent and carcinogenic

Question 19

Eutrophication

Question 20

Safe concentration of Fluoride to resist tooth decay

Answer 20

<1ppm or 1mg/dm3

Question 21

Formula of hydroxy apatite and fluoro apatite

Answer 21

3ca3po4caoh2
3ca3po4caf2
Sirf cl oh ka difference 😂❤️

Question 22

Which apatite is more hard

Answer 22

Fluoro thats why you use aapke tooth mai fluorine hai🤩

Question 23

Brown rott of teeth occur in which concn

Answer 23

> 2ppm of F

Question 24

Which concnoffluorine causes harmful effects to bone N teeth

Answer 24

> 10ppm

Question 25

The safe concn of pb in body
Hint fity fity song

Answer 25

<50 ppb

Question 26

What causes bluebaby syndrome(methhaemoglobinemia)
and what is safe concn
Hint-Fity fity

Answer 26

No3-,<50 ppm

Question 27

What causes laxative effect and what is its safe concentration

Answer 27

Sulphate
<500ppm

Question 28

Cadu khane Mn Fe Al Tum Cu Zano
Safe concn

Answer 28

1.oo5ppm
2.0.05ppm
3.0.2ppm
4.0.2ppm
5.3ppm
6.5ppm

Question 29

Which are used as pesticide in World War II

Answer 29

1.Nicotine
2.DDT

Question 30

Tell the organic solvent which are water insoluble and non biodegradable

Answer 30

Aldrein,Dildrien

Question 31

Which are persistent herbicides

Answer 31

Organochloride

Question 32

Naclo3
Na3Aso3
What are these

Answer 32

Herbicides Organochloride

Question 33

At each tropic level Is Pollutant gets how many times multiplied

Answer 33

10

Question 34

Which was earlier used for dry cleaning

Answer 34

Tetra chloro ethene

Question 35

Is dry cleaning of clothes the replacement of fluorinated agents agents by which will cause less water pollution

Answer 35

Liq co2

Question 36

Nowadays what is the role of hydrogen peroxide in laundry

Answer 36

Bleaching agents

Question 37

Which was earlier used for bleaching paper

Answer 37

Chlorine

Question 38

Is the modern process of making Ethe oxygen step is followed by the presence of catalyst in which medium

Answer 38

Aqua medium

Question 39

In the present practice what do we use for cleansing of water

Answer 39

Alum

Question 40

Does alum is proved to be toxic

Answer 40

Yes

Question 41

The kernel of tamarind used for

Answer 41

Water purification