which of the following leaves a crushable black bead on burning
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Leaves crushable black beads of ash. feathers. Leaves brittle, black ash. LINEN: Burns quickly and steadily with a yellow flame, but takes longer to ignite than cotton.
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Explanation:
One way to find out is to do a burn test. The way that a fiber burns (or melts), the way it smells when it burns and the type of ash or other residue it leaves behind, will all provide clues to the type of fabric you have.
Cotton. The fabric will burn fast and the fire will singe the fabric. The flame will have a yellow glow and after the lighter is removed, the fabric will continue to burn quickly with an afterglow. The smell will be neutral, like burning paper, and the ashes left behind will be light and gray in color.
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