will the force of friction come into play when a rain drop rolls down a glass window pane???

Yes , the force of friction come into play when a rain drop rolls down a glass window pane because the pane is in contact with the drop and the drop is in motion. And the surface of both the object are interlocking with each other. 

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Friction will come to play,however glass is a relatively smooth surface so it won't stop the rain drop.
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