"Kieselguhr" (diatomaceous earth), which is a | vedclass

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(C) Kieselguhr, also known as diatomaceous earth, is a naturally occurring, soft, siliceous sedimentary rock that is easily crumbled into a fine white

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Diatoms

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(C) Kieselguhr, also known as diatomaceous earth, is a naturally occurring, soft, siliceous sedimentary rock that is easily crumbled into a fine white to off-white powder.It is formed from the fossilized remains of diatoms, which are a group of unicellular algae with cell walls made of silica.Because these cell walls are indestructible and accumulate over billions of years in their habitat, they form thick deposits known as diatomaceous earth.Due to its granular nature and heat resistance, it is used in polishing, filtration of oils and syrups, and as an insulating material.

"Kieselguhr" (diatomaceous earth), which is a heat-resistant substance, is obtained from which of the following?

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