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  4. Knock knee syndrome occurs due to the pollution of

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Q. Knock knee syndrome occurs due to the pollution of

AMUAMU 2013Environmental Issues

Solution:

Knock knee syndrome occurs due to the pollution of fluorides. The disease is characterised by stiffness and hardness of joints and bones. More than 13 states of India have high concentration of fluoride (more than 1.5 ppm) in ground drinking water.