Source ,Quality and Quantity of water (WWE)

If pH value of water is

• 7 water it is said to be neutral

• less than 7 it is said to be acidic

• more than 7 it is said to be alkaline

• All the above.

Most satisfactory formula for an estimate of fire demand Q for a city of population P in thousands for Indian conditions, is

• 
• Q = 1640 P (1 - 0.01 P)

• Q = 3180 P

• None of these.

Turbidity of raw water is a measure of

• suspended solids

• acidity of water

• B.O.D.

• None of these.

Pick up the incorrect statement from the following. The underground sources of water, is from

• wells

• springs

• infiltration wells

• storage reservoirs

In Domestics demand .......... quantity of water consumed per capita per day

• 125 Lit

• 150Lit

• 135 Lit

• 270 Lit

Following which Method not used for Population Forecasting

• Arithmetical Increase method

• Aeration method

• Zoning method

• Logistic curve method

Which of the following is a primary source of surface water?

• Rivers

• Groundwater

• Desalination plants

• Atmospheric precipitation

Which of the following methods is commonly used for estimating future water demand?

• Random sampling

• Time series analysis

• Regression analysis

• Survey method