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Question

The commercial cork is obtained from

A
Quercus suber
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B
Calotropis
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C
Pine
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D
Peepal
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Solution

The correct option is A Quercus suber
Cork is an impermeable, buoyant material, a prime-subset of bark tissue. It is harvested for commercial use primarily from Quercus suber (the cork oak), which is endemic to southwest Europe and northwest Africa.
Cork is composed of suberin, a hydrophobic substance and because of its impermeable, buoyant, elastic and fire retardant properties, it is used in a variety of products, the most common of which is for wine stoppers.
Cork's elasticity combined with its near-impermeability makes it suitable as a material for bottle stoppers.

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