The form of iron having the highest carbon content is
Cast iron
Wrought iron
Strain steel
Mild steel
Which of the following $3 d -m e t a l$ ion will give the lowest enthalpy of hydration $(\Delta_{ hyd } H )$ when dissolved in water?
Which pair of compound is expected to show similar colour in aqueous medium
White silver surface turns black when $O_3$ is passed over it. This is due to the formation of
What are alloys? Name an important alloy which contains some of the lanthanoid metals. Mention its uses.
Assertion : Cuprous ion $(Cu^+)$ has unpaired electrons while cupric ion $(Cu^{2+})$ does not.
Reason : Cuprous ion $(Cu^+)$ is colourless whereas cupric ion $(Cu^{2+})$ is blue in the aqueous solution.