Which one does not belong

Exercise and reference answers

Questions

1. Items

   1. Wurtz
   2. Kolbe
   3. Williamson

   Odd item

   Wurtz

2. Items

   1. Reimer
   2. Ozonolysis
   3. Lucas

   Odd item

   Ozonolysis

3. Items

   1. Primary
   2. Secondary
   3. Symmetrical

   Odd item

   Symmetrical

4. Items

   1. Metallic
   2. Allylic
   3. Benzylic

   Odd item

   Metallic

Instructions

Tap the item that does not fit with the others.

Explanation