Question

Study the diagram below of a farm structure and answer the questions that follow.

1. Identify the parts labelled A, B, and C. 
2. Name two chemical preservatives that can be used to treat the wooden part of the above structure against fungi and insect attack.

Answer 1

1.  
   1. A- Cross tie
   2. B- Strut
   3. C- Rafter
2.  
   • old engine oil
   • copper sulphate
   • sodium dichromate
   • arsenic pentoxide