During summer, Khas khas mats for cooling air are prepared from the roots of
A
Bambusa nana
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B
Saccharum manja
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C
Vetiveria zizanoides
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D
Setaria pumila
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Solution
The correct option is C Vetiveria zizanoides
Khas khas mats are widely used in i\India to beat the summer heat. They are prepared with dry grass (Vetiveria zizanoides) or hay which can store a lot of water and are hung around the house. Then the water present in these mats absorb the heat from the surroundings in the form of latent form of energy and thus evaporates.