The soil which is transported by wind is known as

• colluvial

• eolian

• aluvial

• glacial soil

In the treatment of waste water discharge, which treatment stage involves biological treatment?

• Primary treatment

• Secondary treatment

• Tertiary treatment

• Reverse osmosis stage

Ozone depletion in stratosphere would result in 

• forest fires

• global warming

• skin cancer incidence

• None of the above

A lake with nutrients is called

• trophic

• euphotic

• oligotrophic

• eutrophic

According to Kyoto protocol the major nations abide to reduce concentration of green house gases by

• 2008

• 2010

• 2012

• 2018

Bio- indicators are used for

• oxygen demand

• air pollution

• mineral present

• All of the above

77.

At which latitude, heat gain through insolation approximately equals heat loss through terrestrial radiation?

• 66$°$ North and South

• $22\frac{1}{2}°$ North and South

• 40$°$ North and South

• $42\frac{1}{2}°$ North and South

More than 70% of world's freshwater is contained in

• Antartica

• Glaciers and Mountains

• Greenland

• Polar ice

Which one of the following pairs is mismatched?

• Biomass burning - Release of CO₂

• Fossil fuel burning - Release of CO₂

• Nuclear power - Radioactive wastes

• Solar energy - Green house effect

Identify the correctly matched pair

• Montreal protocol - Global warming

• Kyoto protocol - Climatic change

• Ramsar convention - Ground water pollution

• Basal convention - Biodiversity conservation