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Silica

Dolomite cont...

Question

Dolomite contains both calcium and magnesium:

A

True

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B

False

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Solution

The correct option is A True

From formulas it can be seen that, Dolomite contains both Ca & Mg.

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Q. Consider the following statements:
Hard water does not give lather with soap because hard water contains:
(a) calcium bicarbonate
(b) magnesium bicarbonate
(c) chlorides of calcium and magnesium
(d) sulphates of calcium and magnesium
Which of these statements are correct?

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Q. Assertion (A): Hard water forms sticky precipitate with soap.
Reason (R): Hard water contains calcium and magnesium ions

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