Building Maintenance

The chemical heptachlor in anti-termite proofing has concentration by weight of:

  • A. 0.50%
  • B. 0.10%
  • C. 0.30%
  • D. 0.20%
Answer: Option A.
Explanation: 

Heptachlor in anti-termite proofing has concentration by weight of 0.50%.

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