Q. Out of following which compound is used for preservation of wood?
A) $NaCl$
B) $HgCl_{2}$
C) $ZnCl_{2}$
D) $CaCl_{2}$
Explanation
(d)
From the given compounds, only $CaCl_{2}$ is used to preserve wood. NaCl, however is also a preservative but not for wood.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.