Spot the odd one out

Exercise and reference answers

Questions

1. Items

   1. Pentavalent
   2. Donor
   3. Electron
   4. Hole

   Odd item

   Hole

2. Items

   1. Acceptor
   2. Trivalent
   3. Electron
   4. Hole

   Odd item

   Electron

3. Items

   1. Overlap
   2. Metal
   3. No gap
   4. Insulator

   Odd item

   Insulator

4. Items

   1. Doping
   2. Impurity
   3. Extrinsic
   4. Intrinsic

   Odd item

   Intrinsic

Instructions

Tap the item that does not belong with the others.

Explanation