___________ is not a method of waste water treatment.

(a)

oxidation ponds

(b)

Anaerobic lagoons

(c)

Catalytic converter

(d)

Anaerobic bioreactor

Which is not a greenhouse gas?

(a)

CO₂

(b)

N₂O

(c)

O₃

(d)

CFC

Identify the incorrect statement with regard to Global warming

(a)

Leads to species enrichment

(b)

Decrease irrigation

(c)

Increases vector population 

(d)

Frequent heat waves

The total ozone layer over the earth surface is ____________________

(a)

30 DU

(b)

300 DU

(c)

3000 DU

(d)

0.3 DU

Methane is ________________ times as effective as CO₂ at trapping heat.

(a)

5

(b)

10

(c)

20

(d)

100

Which is not a beneficial aspect of Agroforestry?

(a)

Nutrient cycling is improved

(b)

Balance in O₂ - CO₂ composition

(c)

Suitable for wetland where rainfall is maximum

(d)

Reduces water run-off problem 

Which is not reduced by deforestation?

(a)

Amount of habitat

(b)

Amount of animal population

(c)

Amount of biodiversity

(d)

Amount of agricultural land

Identify the potent cause for deforestation.

(a)

Agriculture

(b)

Soil erosion

(c)

Afforestation

(d)

Forest fire

Total number of forestry extension centres in Tamil Nadu is ______________

(a)

16

(b)

32

(c)

18

(d)

51

Who is celebrated as Forest Man of India?

(a)

Anand Mohan Chakrabarthy

(b)

Dr. M.S. Swaminathan

(c)

Jadav Molai Payeng

(d)

Choudhary Ram Dhan

Invasive species _______________

(a)

alter the soil system

(b)

are more adapted

(c)

are fast growing

(d)

all the above

Pick out the odd one out _____________

(a)

Biosphere reserve

(b)

National parks

(c)

Wild life sanctuaries

(d)

Botanical gardens

Which is not true with respect to prosopis julifiora?

(a)

Invasive species native to Mexico

(b)

Arrest wind erosion

(c)

Absorb hazardous chemical from soil

(d)

Decreases O₂ content of water bodies

How many numbers of sacred grooves were documented in Tamil Nadu?

(a)

484

(b)

844

(c)

488

(d)

448

Which is not a true statement regarding rainwater harvesting?

(a)

Mitigates groundwater quality

(b)

Reduces soil erosion

(c)

Decreases soil salinity

(d)

No wastage of land for storing