A metal in which even iron can float is : (a) sodium (b) magnesium (c) mercury (d) manganese
Which of the following metal exist in the liquid state at room temperature ?
(a) magnesium
(b) manganese
(c) mercury
(d) sodium
The metal which can be extracted from pyrolusite ore is: (a) mercury (b) manganese (c) calcination (d) sulphonation
The metal which is always present in an amalgam is: (a) iron (b) aluminium (c) mercury (d) magnesium