41. Minimata disease is due to pollution of

1. 1. Organic waste into drinking water

   
   
   

   2. Oil spill in water

   
   
   

   3. Industrial waste mercury in water

   
   
   

   4. Arsenic into the atmosphere

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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42. Effect of pollution is most marked on

1. 1. Natural balance of nature

   
   
   

   2. Natural geochemical cycles

   
   
   

   3. Natural flora of place

   
   
   

   4. All the above

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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43. Ultraviolet rays coming from sun causes

1. 1. Lung cancer

   
   
   

   2. Mouth cancer

   
   
   

   3. Skin cancer

   
   
   

   4. Cancer of liver

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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44. Chief source of water and soil pollution is

1. 1. Mining

   
   
   

   2. Thermal power plant

   
   
   

   3. Agro industry

   
   
   

   4. All of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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45. Ultimate environmental hazard to mankind is due to

1. 1. Nuclear pollution

   
   
   

   2. Water pollution

   
   
   

   3. Air pollution

   
   
   

   4. Noise pollution

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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