Define turbidity in water and explain its causes, measurement, and significance for
water quality.

Explain the importance of groundwater as a water resource in India. What are the
problems in overusing ground water?

What is meant by the cation exchange capacity (CEC) of soils? What is the property
of soil that determines the CEC of soils? How does CEC vary with pH?

Describe the reasons of soil alkalinity and the consequences of the same

How do the following factors affect the discharge of pollutants in the atmosphere? (5)
i) Atmospheric stability ii) Temperature iii) Precipitation
 iv) Turbulence v) Solar radiation
 b) Distinguish between the following pairs giving examples: (5)
 i) Stationary and Mobile sources of pollutants
 ii) Indoor and Ambient air poll

Describe the distribution of the world’s water resources among oceans, icecaps/
glaciers, groundwater, and surface water, providing approximate percentages. 

What is meant by the atmospheric effect and the greenhouse effect?