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- Subject
- S-BLOCK ELEMENTSchemistry-mcqs › s-block-elements
- Published
- 18 Mar 2019
- Last updated
- 28 May 2026
Explanation
Carnallite is represented by the formula KCl·MgCl2·6H2O, which is a hydrated potassium magnesium chloride mineral. The other formulas correspond to different compounds: KCl is potassium chloride, Na2B4O7·10H2O is borax, and CaCO3·MgCO3 is dolomite.
More S-BLOCK ELEMENTS MCQs
Practice related questions from the same subject.
- 1.What is the effect of adding 2% gypsum to cement?
- 2.Which element is capable of forming complex compounds?
- 3.Why is the second ionization energy of alkali metals significantly high?
- 4.In which of the following gases does magnesium metal fail to ignite when placed inside a container?
- 5.Why does sodium rarely exhibit an oxidation state of +2?
- 6.Which pair of elements exhibits a diagonal relationship in the periodic table?
- 7.Which alkali metal produces exclusively the normal oxide upon reacting with oxygen?
- 8.Gypsum is added to the soil primarily to supply which nutrients?
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