A) Both Gaurav's and Samik's glass plates will get blackish soot deposition.
B) Neither Samik's nor Gaurav's glass plate will have blackish soot deposition.
C) Gaurav's glass plate will have blackish soot deposition but Samik's glass plate will not.
D) Samik's glass plate will have blackish soot deposition but Gaurav's glass plate will not
Correct Answer: C
Solution :
Gaurav held the glass plate inside the flame. Therefore, he held the plate in the luminous zone. This zone is the zone of incomplete combustion. Therefore, a circular blackish ring will be obtained on his glass plate. Samik held the glass plate slightly above the flame i.e., in the non-luminous zone. As this zone is the zone of complete combustion, no soot deposit will take place in this case. The correct answer is C.You need to login to perform this action.
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