Environmental Chemistry MCQs

Option A: Aug – Nov

Option B: Sep – Nov

Option C: Nov – Dec

Option D: Dec – Jan

Correct Answer: B. Sep – Nov ✔

Option A: Cl2

Option B: O3

Option C: ClO2

Option D: both B & C

Correct Answer: both B & C ✔

Option A: Ammonia

Option B: Dissolved oxygen

Option C: Carbon dixide

Option D: All

Correct Answer: Ammonia ✔

Option A: 10

Option B: 100

Option C: 10000

Option D: 100000

Correct Answer: 10 ✔

Option A: DO

Option B: BOD

Option C: COD

Option D: all of the above

Correct Answer: all of the above ✔

Option A: CO

Option B: NO2

Option C: both a & b

Option D: none of the above

Correct Answer: NO2 ✔

Option A: SO3

Option B: CO

Option C: NO

Option D: H2SO4

Correct Answer: H2SO4 ✔

Option A: dinitrogen oxide

Option B: nitrogen dioxide

Option C: chlorine gas

Option D: chlorine dioxide

Correct Answer: nitrogen dioxide ✔

Option A: volcanoes

Option B: electric sparks

Option C: combustion

Option D: all

Correct Answer: volcanoes ✔

Option A: ozone

Option B: carbonic acid

Option C: sulphuric acid

Option D: carbon dioxide

Correct Answer: carbon dioxide ✔

Option A: 5 to 200 kg

Option B: 20-200 kg

Option C: 200-400 kg

Option D: 30-400 kg

Correct Answer: 5 to 200 kg ✔

Option A: iron

Option B: fertilizer

Option C: paper

Option D: none

Correct Answer: none ✔

Option A: Biosphere

Option B: Ecosystem

Option C: Both a & b

Option D: Hydrosphere

Correct Answer: Ecosystem ✔

Option A: Nox

Option B: NO2

Option C: N2O3

Option D: NO

Correct Answer: NO ✔

Option A: 60

Option B: 70

Option C: 80

Option D: 90

Correct Answer: 80 ✔

Option A: oceans

Option B: glaciers & icecaps

Option C: fresh water lakes and ponds

Option D: All have equal distribution

Correct Answer: oceans ✔

Option A: KMnO4

Option B: Alums

Option C: Ozone

Option D: All

Correct Answer: KMnO4 ✔

Option A: chromium III

Option B: chromium IV

Option C: chromium V

Option D: chromium VI

Correct Answer: chromium IV ✔

Option A: 2

Option B: 3

Option C: 4

Option D: 5

Correct Answer: 5 ✔

Option A: alum

Option B: nickel sulphate

Option C: copper sulphate

Option D: barium sulphate

Correct Answer: alum ✔

Option A: the amount of ozone layer is greater in the region close to the equator

Option B: ozone acts as filter for UV radiations

Option C: in the equatorial region it acts as pollutant

Option D: CFCs play effective role in removing O3 in the stratosphere

Correct Answer: the amount of ozone layer is greater in the region close to the equator ✔

Option A: CFC

Option B: CO2

Option C: CO

Option D: Oxides of nitrogen

Correct Answer: CFC ✔

Option A: troposphere

Option B: stratosphere

Option C: mesosphere

Option D: photosphere

Correct Answer: stratosphere ✔

Option A: sufficient NO

Option B: sunlight

Option C: less movement of air

Option D: winds

Correct Answer: winds ✔

Option A: H2SO4

Option B: HNO3

Option C: both A and B

Option D: none

Correct Answer: both A and B ✔

Option A: NH2Cl

Option B: NHCI2

Option C: NCI2

Option D: all of the above

Correct Answer: all of the above ✔

Option A: 3 – 7 days

Option B: 2 -3 days

Option C: 3 – 7 years

Option D: 2 – 3 years

Correct Answer: C. 3 – 7 years ✔

Option A: N P K

Option B: N K C

Option C: N S P

Option D: N Ca P

Correct Answer: N P K ✔

Option A: boron

Option B: iron

Option C: copper

Option D: carbon

Correct Answer: carbon ✔