The oxide of calcium CaO is:

A. Acidic

B. Basic

C. Amphoteric

D. Neutral

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The word alkali means:

A. Base

B. Basic salt

C. Ashes

D. Acid

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Bromine is a non metal in:

A. Solid state

B. Liquid state

C. Gaseous state

D. Plasma state

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Which one of the following is not an alkali metal:

A. Francium

B. Cesium

C. Rubidium

D. Radium

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