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Minerals, Ores and their Formation

Carnallite is...

Question

Carnallite is the mineral of:

A

N a

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B

C a

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C

M g

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D

none of the above

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Solution

The correct option is C $M g$
Carnallite is an evaporite mineral a hydrated potassium magnesium chloride. It is variably colored yellow to white,reddish or blue. It occurs with a sequence of potassium and magnesium evaporite. It is an uncommon double chloride mineral that forms under specific conditions. It is an important source of potash.

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Q. Which of the following represents the composition of Carnallite mineral?

Q. Carnallite is a reddish or white mineral and given represented by the formula

K M g C l_{3} .6 H_{2} O

.

Q. The order of reactivity of metals is
(a) K > Na > Ca > Au
(b) K > Ca > Na > Mg
(c) Fe > Na > Mg > Au
(d) Cu > Fe > K > Na

Q. The mineral carnallite contains __(i)___and __(ii)____metals. ____(iii)____ is purified by cupellation and ____(iv)_____is purified by distillation.

Q. Mineral involved in photolysis of water are
(a) Mn
(b) Ca
(c) Mg
(d) Cl

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