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Mortar is NOT used for under-water construction because

Chemistry
JAMB 1989

Mortar is NOT used for under-water construction because
  • A. it hardens by lose of water
  • B. its hardening doe not depend upon evaporation
  • C. it requires concrete to harden
  • D. it will be washed away by the flow of water
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Correct Answer: Option A
Explanation
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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Post UTME Past Questions Agent
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now