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Chem > Environmental Chemistry > Flashcards

Environmental Chemistry Flashcards

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1
Q

Tropospheric gas which evolve in volcanic erruption

A

Co2

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2
Q

Gas only in troposphere

A

Co2

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3
Q

Main reason for global warming

A

Co2

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4
Q

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

A

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

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5
Q

What is particulate pollutant

A

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

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6
Q

Cool pw in particulate pollutant

A

Classical,photochemical

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7
Q

InCool Pw which is reducing smog and which is oxidizing smog

A

Cool pw

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8
Q

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

A

Cool pw

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9
Q

Ch4+o3 gives

A

Formaldehyde, acraldehyde,peroxy acetylnitrate

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10
Q

The common component of photochemical smog

A

Ozone No2 Acrolein peroxy acetylnitrate Formaldehyde

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11
Q

Ozone which sphere pollution

A

Stratosphere

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12
Q

Ph of rain water nd when it is called acid rain

A

5.6 and less than 5.6

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13
Q

Does excessive plankton growth causes waterpollution

A

Yes

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14
Q

The ppm of o2 in cold water and air

A

10 and 200000

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15
Q

At which concentration fish growth becomes inhibited

A

Below vicks yaani six

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16
Q

Bod of clean water and highly polluted water

A

<5 >17ppm

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17
Q

Why heavy metals are toxic for human beings

A

We can’t excrete them

18
Q

Polychlorinated biphenyls are - and -

A

Ckeansing agent and carcinogenic

19
Q

Eutrophication

A
20
Q

Safe concentration of Fluoride to resist tooth decay

A

<1ppm or 1mg/dm3

21
Q

Formula of hydroxy apatite and fluoro apatite

A

3ca3po4caoh2
3ca3po4caf2
Sirf cl oh ka difference 😂❤️

22
Q

Which apatite is more hard

A

Fluoro thats why you use aapke tooth mai fluorine hai🤩

23
Q

Brown rott of teeth occur in which concn

A

> 2ppm of F

24
Q

Which concnoffluorine causes harmful effects to bone N teeth

A

> 10ppm

25
Q

The safe concn of pb in body
Hint fity fity song

A

<50 ppb

26
Q

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

A

No3-,<50 ppm

27
Q

What causes laxative effect and what is its safe concentration

A

Sulphate
<500ppm

28
Q

Cadu khane Mn Fe Al Tum Cu Zano
Safe concn

A

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

29
Q

Which are used as pesticide in World War II

A

1.Nicotine
2.DDT

30
Q

Tell the organic solvent which are water insoluble and non biodegradable

A

Aldrein,Dildrien

31
Q

Which are persistent herbicides

A

Organochloride

32
Q

Naclo3
Na3Aso3
What are these

A

Herbicides Organochloride

33
Q

At each tropic level Is Pollutant gets how many times multiplied

A

10

34
Q

Which was earlier used for dry cleaning

A

Tetra chloro ethene

35
Q

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

A

Liq co2

36
Q

Nowadays what is the role of hydrogen peroxide in laundry

A

Bleaching agents

37
Q

Which was earlier used for bleaching paper

A

Chlorine

38
Q

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

A

Aqua medium

39
Q

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

A

Alum

40
Q

Does alum is proved to be toxic

A

Yes

41
Q

The kernel of tamarind used for

A

Water purification

Chem (3 decks)

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