Q.

For which one of the following minerals, the composition given is incorrect?

Moderate

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Soda ash- Na2CO3

Carnallite- KCl⋅MgCl2⋅6H2O

Borax- Na2B4O7⋅7H2O

Glauber's salt-( Na2SO4⋅10H2O )

answer is C.

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Detailed Solution

Borax is Na2B4O7⋅10H2O.

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