Water Pollution and Microbial Disease Class 6 GK MCQ Question and Answers. Important MCQ on Water Pollution and Microbial Disease Subject.
Water Pollution and Microbial Disease Class 6 GK MCQ
(1) Water pollution happened due to……?
(a) Rapid Urban Development
(b) Chemical waste dumping
(c) Fertilizer run-off
(d) All of these
Ans. – (d) All of these
(2) What is the danger of water pollution?
(a) Due to water pollution harvesting system collapse.
(b) Water pollution gives us salty water.
(c) Water pollution decrease ground water level.
(d) Pollution in water can cause disease or act as poisons.
Ans. – (d) Pollution in water can cause disease or act as poisons.
(3) Which of the following rivers is called the world’s most polluted river?
(a) Ganga River
(b) Chenab River
(c) Cauvery River
(d) Yamuna River
Ans. – (a) Ganga River
(4) Primary causes of water pollution are?
(a) Plants
(b) Animals
(c) Human activities
(d) None of these
Ans. – (c) Human activities
(5) ——-% of water pollution comes from human activity?
(a) 30 %
(b) 60 %
(c) 90 %
(d) 100 %
Ans. – (c) 90 %
(6) Which of the following salts is the main cause of permanent Hardness of water?
(a) Magnesium sulphate
(b) Magnesium bicarbonate
(c) Magnesium carbonate
(d) None of above
Ans. – (a) Magnesium sulphate
(7) Which of the following is mainly responsible for the causes of water Pollution?
(a) Rain water
(b) Paper factories
(c) Oil refineries
(d) Both (b) and (c)
Ans. – (d) Both (b) and (c)
(8) Which of the following is a waterbomb disease?
(a) Typhoid
(b) Cholera
(c) Diarrhea
(d) All of these
Ans. – (d) All of these
(9) The main source of water pollution is
(a) Floods
(b) Fertilizers
(c) Industrial waste
(d) Both (b) and (c)
Ans. – (d) Both (b) and (c)
(10) Which of the following diseases or infections is caused due to poor Water hygiene?
(a) Leprosy
(b) Trachoma
(c) Conjunctivitis
(d) All of these
Ans. – (d) All of these
(11) Which of the following is not a waterborne disease?
(a) Measles(b) Typhoid
(c) Cholera(d) Hepatitis
Ans. – (a) Measles
(12) __________provides the perfect breeding ground for viruses to Develop and multiply?
(a) Contaminated water
(b) Rain water
(c) Salty water
(d) None of these
Ans. – (a) Contaminated water
(13) Which are the most common causes of Bacterial diseases?
(a) Insufficient wastewater treatment
(b) Faucal contamination of drinking water
(c) Flood water harvesting system
(d) Both (a) and (b)
Ans. -(d) Both (a) and (b)
(14) Water hardness can be removed by?
(a) Carbon filtration
(b) Sediment filtration
(c) Resin ion exchange
(d) Multimedia filtration
Ans. – (c) Resin ion exchange
(15) Coliform bacteria in water is an indication of?
(a) Radioactive wastes
(b) Excess fertilizer
(c) Decaying animals/plant
(d) Human feces
Ans. – (d) Human feces
(16) The purest form of natural water is?
(a) Rain water
(b) River water
(c) Pond water
(d) Well water
Ans. – (a) Rain water
(17) The maximum permissible turbidity in drinking water is?
(a) 5 NTU
(b) 10 NTU
(c) 15 NTU
(d) 20 NTU
Ans. – (b) 10 NTU
(18) Filtration can remove water hardness.
(a) True
(b) False
(c) Both (a) and (b)
(d) None of these
Ans. – (b) False
(19) Carbon filter can remove?
(a) Taste and odor
(b) Chlorine
(c) Some viruses and bacteria
(d) All of these
Ans. – (d) All of these
(20) How often should a cartridge filter be replaced?
(a) Every month
(b) Every four to six months
(c) When it clogs
(d) Never
Ans. – (b) Every four to six months.
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