Chemistry of Metals and Alloys

Yes, it is the correct answer. Aluminium is the most abundant metal in the Earth's crust. Percentage of aluminium in the Earth's crust is 8%.

Silver is less reactive than copper in the reactivity series, so it cannot displace copper from a copper sulphate solution.

Silicon is a metalloid, but in many contexts, it is classified as a non-metal compared to the other options provided (Magnesium, Iron, Titanium), which are clearly metals.

Metalloids are elements that exhibit properties intermediate between those of metals and non-metals.

Aluminum is a well-known metal, while the others (Hydrogen, Silicon, Oxygen) are non-metals or metalloids.

Mercury is the only metal that is liquid at standard room temperature and pressure.

Metalloids are elements that possess properties intermediate between metals and non-metals. They are classified as elements on the periodic table.

Germanium is a well-known metalloid, situated on the periodic table between metals and non-metals, exhibiting properties of both.

ANS 4.