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Question
Cork is an excellent material for making bottle stopper, because it is
Cork is an excellent material for making bottle stopper, because it is
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Solution
The correct option is C Air tight
Cork is an impermeable, buoyant material, a prime-subset of bark tissue that 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 (air tight), buoyant, elastic and fire retardant properties, it is used in a variety of products, the most common of which is for wine stoppers. Because of the cellular structure of cork, it is easily compressed upon insertion into a bottle and will expand to form a tight seal.
Cork is an impermeable, buoyant material, a prime-subset of bark tissue that 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 (air tight), buoyant, elastic and fire retardant properties, it is used in a variety of products, the most common of which is for wine stoppers. Because of the cellular structure of cork, it is easily compressed upon insertion into a bottle and will expand to form a tight seal.
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