Water Pollution
Trending Questions
How do industries cause water pollution?
Name Any Four Activities Which You Can Do Without Water
Continuous addition of sugars in ‘fed batch’ fermentation is done to
Purify enzymes
Produce methane
Obtain antibiotics
Degrade sewage
Name three water borne diseases.
Explain why, hot water released by power plants and industries is considered a pollutant.
Name any four pollutants which cause water pollution. State any three ways of controlling water pollution.
- Water pollution
- Air pollution
- Noise pollution
- Soil pollution
- Chlorine
- Biogas
- Air
- Ozone
Explain the harmful effects associated with the disposal of plastics
Which of the following is used as a disinfectant?
Sugar charcoal
Wood charcoal
Animal charcoal
addition of harmful substances
process of adding vital minerals
process of removing harmful substances
process of killing germs and microorganisms
What are the main causes of water pollution ? How can it be controlled ?
At many places the wastewater containing human excreta from homes and carried in big underground pipes is dumped into a river as such which pollutes the riverwater.
(a) What is the common name of such wastewater?
(b) Name five types of harmful organisms contained in it.
(c) Name any five human diseases caused by drinking river water contaminated with such wastewater.
Which of the following is not a hard water?
Water containing dil. HCl
None of these
Water containing CaCl2
Water containing MgSO4
How can you control water pollution?
What are the natural cleansing agents of water?
Match the items given in column I with one or more items given in column II :
Column I Column II(i) prevents photosynthesis(a) Sewage dumped in river(ii) Damage ozone layer(b) Excess fertiliser in fields(iii) Produce acid rain(c) Carbon dioxide in air(iv) Kill fish by deoxygenating water(d) Dust in air(v) Causes water borne diseases(e) CFCs(vi) Leads to global warming(f) Sulphur dioxide in air
- It increases O2 competition among the fishes
- The nitrogen content of the water decreases.
- Fish and other aquatic animals die due to the bad odour
- It replaces food material of fishes
What is Thermal Pollution?
Lindane and gammaxene are example of:
Air pollutants
Pesticides
Fungicides
Aerosol spray propellants
The use of excessive fertilisers in the fields leads to the deficiency of an important substance in the water of a nearby lake. Name the substance.
- sea
- potable
- sewage
Which of the following is/are the uses of fresh water?
Drinking
Bathing
Cooking
All of the above
Pesticides get washed off by rain into water sources and make ground water germ free.
True
False
Reason: The prime contaminants from sewage and industrial effluents are nitrates and phosphates, which overstimulate the growth of algae.
- Both the statement and the reason are correct, and the reason is not the correct explanation for the statement.
- Both the statement and the reason are correct, and the reason is the correct explanation for the statement.
- Both the statement and the reason are incorrect.
- The statement is correct, but the reason is incorrect.
Which of the following can be used to extract the water trapped in aquifers?
Water tank
Dam
Tube well
Canal
Which of the following is NOT a pollutant?
Garbage dumped on streets
Oil in a tanker
Emission from cars
Chemical fertilisers sprayed on plants
High temperature waste water from industries leads to thermal pollution.
True
False