D55 QUIZ OF THE DAY

Which of the following is defined as water that contains disease-causing organisms?

• Polluted water
• Contaminated water
• Wholesome water
• Raw water

Answer explanation

Contaminated water contains pathogenic organisms and poses a health risk.

Which type of water is chemically pure and consists of only H2O?

• Palatable water
• Pure water
• Potable water
• Wholesome water

Answer explanation

Pure water refers to chemically pure H2O without any impurities.

As per IS 1172-1993, what is the typical domestic water demand for low-income group housing?

• 200 LPCD
• 150 LPCD
• 135 LPCD
• 225 LPCD

Answer explanation

For low-income groups, domestic water demand is typically 135 LPCD.

Which of the following consumes the maximum water per capita in institutions?

• Hospitals
• Offices
• Restaurants
• Airports

Answer explanation

Hospitals consume 340–380 LPCD, the highest among listed options.

Which water type is described as 'aesthetically pure and tasteful'?

• Wholesome water
• Raw water
• Palatable water
• Contaminated water

Answer explanation

Palatable water is aesthetically appealing and suitable for drinking.

The water demand for fire fighting in a city with 50 lakh population is approximately:

• 50 LPCD
• 5 LPCD
• 1 LPCD
• 10 LPCD

Answer explanation

Fire demand is approximately 1 LPCD for 50 lakh population.

Which of the following causes reduction in per capita water consumption?

• Hotter climate
• Modern living
• Metering system
• Good quality water

Answer explanation

Metering system discourages excess use and thus reduces consumption.

Which term defines the vertical distance between outlet and flood level of a plumbing fixture?

• Air gap
• Residual head
• Available head
• Back siphonage

Answer explanation

Air gap prevents backflow by maintaining a vertical separation.

Assertion (A): Contaminated water is always polluted. Reason (R): It contains pathogenic microorganisms.

• Both A and R are true and R is the correct explanation of A
• Both A and R are true but R is not the correct explanation of A
• A is true but R is false
• A is false but R is true

Answer explanation

Contaminated water always has pollution due to pathogens.

Which component is used to remove settled materials from pipelines or dams?

• Backflow preventer
• Washout valve
• Foot valve
• Air valve

Answer explanation

Washout valves are installed to flush out sediments and debris from pipelines.