CCA preservative is composed of how many ingredients?

এই অধ্যায়ের আরও প্রশ্ন

• C-05-Q146In CCA mixture, percentage of chromic oxide is —
• C-05-Q147In CCA mixture, percentage of copper oxide is —
• C-05-Q148In CCA mixture, percentage of arsenic penta oxide is —
• C-05-Q149CCA preservative is used as a solution of —
• C-05-Q150Recommended amount of preservative pushed per cubic foot of wood is —
• C-05-Q151After CCA treatment, wood becomes ready for use after —
• C-05-Q152CCA preservative prevents —
• C-05-Q153The annual amount of collected wood from a forest area should be —
• C-05-Q154Why is tree felling done after completion of specific time rotation?
• C-05-Q155The coastal regions of Bangladesh are at threat due to —