Which of the following shows inert pair effect ?

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Boron is non metal while other elements of IIIA group are metals. This is because______________?

A. it has small size B. it has high nuclear charge C. it forms molecular addition compounds D. all of the above...

Substance which is found in dried up lakes of Tibet and California is_______________?

A. Tincal B. Boric acid C. Calcium carbonate D. Colemanite...

Which of the following does not give Borax bead test ?

A. Cu B. Cr C. Ni D. A1...

If temperature of gallium arsenide is increased then its conductivity will___________________?

A. decrease B. increase C. remains constant D. first decreases then increases...

Which of the following will decompose to produce litharge_________________?

A. Pb2O B. Pb3O4 C. PbO2 D. All of the above...