Advertisements
Advertisements
Question
Open drain system is a breeding place for which of the following?
Options
Flies
Mosquitoes
Organisms which cause diseases
All of these
Advertisements
Solution
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
RELATED QUESTIONS
Why is water very precious for all living being ?
Water has ...................... density and .................. volume at 4°C.
The ultimate source of all water on the earth is
What do you mean by water pollution ?
Give balanced chemical equations to show the reaction between Magnesium and water.
What causes the violence associated with torrential rain?
Explain why:
Fused CaCl2 or conc. H2SO4 is used in a desiccator.
What is the importance of dissolved impurities in water?
Why is it said that water is life?
State what is potable water. Give its qualities or characteristics which make it fit for human consumption.
Give a balanced equation for the following conversion:
Magnesium bicarbonate in temporary hard water to magnesium carbonate by boiling.
Define ‘eutrophication’.
State the importance of water for all general uses.
Differentiate between the following:
Natural water and treated water
True or false? Correct the wrong statement.
We get rainwater throughout the year.
Suggest some ideas to save rainwater in your school.
________ of water is in oceans and seas.
Which of the following does not show water shortage?
Why should we not throw used tea leaves into sink?
What is water?
