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Which pair of...

Question

Which pair of substances among the following would float in a tumbler half filled with water?

A

Cotton thread, thermocol

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B

Feather, plastic ball

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C

Pin, oil drops

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D

Rubber band, coin

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Solution

The correct option is B Feather, plastic ball
b) Feather, plastic ball

Feather and plastic ball are lighter than water and have greater surface area.
Thus, they float on water.

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