Presence of excess flourine in water causes

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Presence of excess flourine in water causes

Options:

A . Dental cavity

B . Tooth decay

C . Fluorosis

D . Respiratory disease

Answer: Option C

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More Questions on This Topic :

Question 1. Higher concentration of nitrogen dioxide in atmospheric air causes....

Question 2. Presence of nitrogen in high concentration in contaminated air reduces partial pressure of oxygen in lungs, thereby caus....it acts as a natural asphyxant is ≥ __________ percent.

Question 3. Maximum permissible limit of industrial noise as recommended by World Health Organisation (WHO) is __________ decibels.....as recommended by World Health Organisation (WHO) is __________ decibels.

Question 4. Fluorosis is caused due to the presence of excessive amount of __________ in drinking water.....

Question 5. Smog is not formed due to the presence of __________ in the atmosphere.....

Question 6. Dose of chlorine for disinfection of water is about __________ mg/litre of water.....

Question 7. Which of the following plants does not emit appreciable amount of SO₂ in atmosphere?....

Question 8. Presence of iron and manganese in water causes....

Question 9. What is the major constituents of waste/polluted water discharged from textile, pulp & paper, tanning, distillary, dairy....pulp & paper, tanning, distillary, dairy and meat packing industries?

Question 10. Presence of carbon monoxide in atmosphere produced by decomposition of chlorophyl and haemoglobin breakdown of some anim....and haemoglobin breakdown of some animals, beyond TLV (>50 ppm)

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