Consider the following materials:
Copper, Tungsten, Chromium, Aluminium, Nichrome, Iron 
Which of these is used to make heating element of an electric iron?

Consider the following materials:
Copper, Tungsten, Chromium, Aluminium, Nichrome, Iron 
Which of these is used to make filament of an electric bulb?

In the circuit diagram shown below:

Would any of the bulbs glow when the switch is in the ‘off position?
 

In the circuit diagram shown below:

What will be the order in which the bulbs $\mathrm{A}$, $\mathrm{B}$ and $\mathrm{C}$ will glow when the switch is moved to the ‘on’ position?