Which of the following statements regarding aluminium is not correct?

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Aluminium is a light metal with considerable strength

Aluminium is a good conductor of heat and electricity

The corrosion of the aluminium metal is prevented by the formation of a coat of aluminium oxide on its layer

Aluminium dissolves in hydrochloric acid but not in concentrated sodium hydroxide

answer is D.

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Detailed Solution

Aluminium dissolves both in HCl and conc. NaOH2Al+6HCl→Al2Cl3+3H2 and 2Al+2NaOH+6H2O→2NaAl(OH)4+3H2O

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