Answers

2014-11-01T22:15:43+05:30
The rain clouds are more dense as they are filled with water droplets, so the  sunlight get trapped in the clouds and  the sunlight is not scattered by the clouds  so they appear black
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2014-11-02T07:24:35+05:30
Rain clouds are filled with water. Due to the high density  and thickness of water in clouds it does not  allow the sunlight to pass through it. And the colour of clouds appears black or greyish in colour , 
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