UNIT-I Water Supply

The average quantity of water (in Lpcd) required for domestic purposes according to IS code is ________

• 100

• 155

• 135

• 170

In which type of water demand, minimum average consumption of water takes place?

• Domestic water demand

• Industrial water demand

• Institutional and commercial water demand

• Fire demand

What are the factors affecting per capita demand?

• Size of city

• Size of city, habit of people

• Cost of water, quality of water, size of city

• Cost of water, quality of water, size of city, habit of people

96.5 per cent of the total volume of the world’s water is estimated to exist as _____ and only 2.5 per cent as _______.

• oceanwater, freshwater

• seawater, potablewater
• oceanwater, riverwater
• brackishwater, freshwater

Which of the following is not surface water?

• Reservoirs

• Lacks

• Rivers

• Aquifers

In which method of population forecasting, increase in population from decade to decade is assumed constant?

• Arithmetical increase method

• Geometrical increase method

• Incremental increase method

• Decreased rate of growth method

Which method is suitable if the growth rate is decreasing and the population is reaching towards saturation?

• Arithmetical increase method

• Graphical comparison method

• Zoning method

• Decreased rate of growth method

Which method is used to measure the color of water?

• Gravimetric analysis

• Chromatography

• Tintometer method

• Hydrometer analysis

The range of temperature of water that is required to do the temperature test is __________

• 10-25⁰C

• 0-25⁰C

• 10-30⁰C

• 20-30⁰C

In which method of population forecasting, increase in population from decade to decade is assumed constant?

• Arithmetical increase method

• Geometrical increase method

• Incremental increase method

• Decreased rate of growth method