Water Quiz | Water Short Questions and Answers

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Questions
41 The following cause alkalinity in natural water.
A Potassium carbonate
B Potassium bicarbonate
C Sodium carbonate
D All of the above

Answer: All of the above
42 The following cause alkalinity as well hardness in natural water.
A Calcium carbonate
B Calcium bicarbonate
C Magnesium carbonate
D All of the above

Answer: All of the above
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43 Temporary hardness is caused due to
A Magnesium carbonate
B Calcium sulphate
C Magnesium sulphate
D Magnesium chloride

Answer: Magnesium carbonate
44 Permanent hardness is caused due to
A Magnesium carbonate
B Magnesium bicarbonate
C Magnesium sulphate
D All of the above

Answer: Magnesium sulphate
45 According to WHO, the soft water has 0 to _____ milligram per litre as CaCO3.
A 30
B 60
C 90
D 120

Answer: 60
46 The excess presence of which of the following cause the teeth of children mottled and discoloured?
A Fluorides
B Chlorides
C Hardness
D All of the above

Answer: Fluorides
47 Fluorides can be removed by
A Reverse osmosis
B Lime softening
C Ion exchange
D All of the above

Answer: All of the above
48 The source of Arsenic in water is
A Industrial waste
B Fertilizers
C Phosphate rocks
D All of the above

Answer: All of the above
49 The process of nutrient enrichment is termed as
A Eutrophication
B Limiting nutrients
C Enrichment
D Schistosomiasis

Answer: Eutrophication
50 Freshwater lakes are most often limited by
A Nitrogen
B Phosphorus
C Carbon
D None of the above

Answer: Phosphorus
51 Which of the following is not a water borne disease?
A Typhoid
B Scabies
C Cholera
D Hepatitis

Answer: Scabies
52 Which of the following is not a water hygiene disease?
A Leprosy
B Conjunctivitis
C Trachoma
D Diarrhoea

Answer: Diarrhoea

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