Advertisements
Advertisements
प्रश्न
Why are open drains a concern?
Advertisements
उत्तर
Drains that are not covered may get blocked with solid wastes like plastic bags, rags and gravel. Such drains are flooded with dirty water that stagnates and is polluted emitting foul smells and provides breeding grounds to various microbes. Mosquitoes lay eggs and breed causing the spread of diseases like malaria and dengue. Sewage wastes also carry germs that cause serious waterborne diseases like cholera, typhoid, dysentery and jaundice.
APPEARS IN
संबंधित प्रश्न
What is done to make drinking water clean and safe?
Use your brain power!
How should roads and footpaths be built to make rainwater seep into the ground?
What works are undertaken to make water available even after the rainy season?
Fill in the blanks with the help of words given in bracket after the sentence.
Water which looks clean still has disease carrying ______ and ______ impurities.
(insects, microorganisms, particles, dissolved, harmful)
Find out the wrong statement and write it in its correct form.
Water that is suitable for drinking is called soft water.
Explain the traditional ways of purifying water to make it fit for drinking.
Which of the following is a part of inorganic impurities of the sewage?
______ from the air and sunlight destroy the germs present in water.
Washing soda is used to remove permanent hardness of water.
Name the chemical which converts chlorides and sulphates into insoluble carbonates.
