The chemical heptachlor in anti-termite proofing has concentration by weight of:
A
0.5%
B
0.1%
C
0.3%
D
0.2%
Correct Answer: 0.5%
The anti-termite chemicals in water emulsion can be any of aldrin, heptachlor and chlordane. Aldrin and heptachlor have concentration by weight of 0.5% and chlordane of 1%.