Zeolites are ion-exchange resins used for softening of water. Superior ion-exchangers were made just before and Second World War. These consisted of:

fine sand

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a giant structure of hydrocarbons

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finely divided silica

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organic salts of lithium

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Solution

The correct option is C finely divided silica
Zeolites are microporous crystalline solids with well-defined structures. Generally they contain silicon, aluminium and oxygen in their framework and cations, water and/or other molecules within their pores.
Superior ion-exchangers are Zeolites which consists of finely divided silica.

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Similar questions

The zeolites which are used as ion exchangers in softening of "hard" water are:

C_{8} H_{7} S O_{3}

C a^{2 +}

C_{8} H_{7} S O_{3} N a

(

206)

C a^{2 +}

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