Advertisements
Advertisements
प्रश्न
Open drain system is a breeding place for which of the following?
पर्याय
Flies
Mosquitoes
Organisms which cause diseases
All of these
Advertisements
उत्तर
All of these
Explanation:
In some places, there are open drains to dispose off the sewage. These drains can easily get blocked by plastic bags and can overflow. Therefore, the problems of smell, breeding of mosquitoes, flies and germs are encountered in open drains.
APPEARS IN
संबंधित प्रश्न
What is the major source of fresh water in the city/town/village where you live?
Give reason for Silica gel pouches are kept in unused water bottle.
Name the gas produced when steam is passed over hot coke.
Give reason of Icebergs float on ocean water.
Give one word for the following statement:
The gaseous form of water found in air .
Give balanced chemical equations to show the reaction between Magnesium and water.
Give a reason why alcohol and water form a miscible mixture while oil & water do not.
Give the importance of dissolved air – in water.
Select the correct answer of the following statement:
A decahydrate crystal.
Select the correct answer of the following statement:
A drying agent placed in desiccator.
Complete the statement by filling the blank with the correct word from the option.
The ratio of hydrogen & oxygen in water is ____.
Name or state the following:
A deliquescent salt of a trivalent metal.
What happens when a spoonful of sugar, sawdust, and soil are added to a glass of water?
Which are the three states of water?
Match the following
| 1. | Flood | Lake |
| 2. | Surface water | Evaporation |
| 3. | Sunlight | Water vapour |
| 4. | Cloud | Pole |
| 5. | Frozen water | Increased rainfall |
Nitrogen is used for the treatment of drinking water.
Among the given options, which one is not correct for the use of large amounts of fertilisers and pesticides?
In the coastal areas, wind current moves from the sea towards the land during the day; but during the night it moves from land to the sea. Discuss the reason.
Look at the figure.
Write down activities shown in this figure in which water is being used.
