Q.The wooden poles well impregnated with creosote oil or any preservative compound have life of

  • A25 – 30 years
  • B20 – 25 years
  • C10 – 15 years
  • D5 – 10 years 
Correct Answer : (A)

25 – 30 years

Hints :

The wooden poles well impregnated with creosote oil or any preservative compound have life of 25 – 30 years.

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