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Explain the following in one or two sent...

Explain the following in one or two sentences.

A

Magnesium oxide is used for the lining of steel making furnace.

B

The mixture of hydrazine and hydrogen peroxide with a copper (II) catalyst is used as a rocket fuel.

C

Orthophosphorous acid is not tribasic acid.

D

The molecule of magnesium chloride is linear, whereas that of stannous chloride is angular.

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IIT-JEE PREVIOUS YEAR (CHEMISTRY)-P BLOCK ELEMENTS-Subjective Question
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