By annealing, steel
Becomes soft
Becomes liquid
Becomes hard and brittle
Is covered with a thin film of $F{e_3}{O_4}$
Out of $\mathrm{Cu}_{2} \mathrm{Cl}_{2}$ and $\mathrm{CuCl}_{2}$, which is more stable and why ?
Which of the following compounds is not coloured ?
Which of the following elements is alloyed with copper to form brass
Which of the will not form an amalgam
The number of unpaired electrons in $Z{n^{2 + }}$ is