Out of $Cu_2Cl_2$ and $CuCl_2$, which is more stable and why ?
Solder is an alloy of
Assertion : Transition metals are good catalysts.
Reason : $V_2O_5$ or $Pt$ is used in the preparation of $H_2SO_4$ by contact process.
The second and third rows of transition elements resemble each other much more than they resemble the first row. Explain why ?
Bullet-proof steel alloy is prepared by using
A pink colored salt on dry heating becomes blue in colour. Salt may contain