1.

Which of the following is not a pozzolanic material?(a) Fly ash(b) Silica fume(c) Cinder(d) Slag

Answer» The correct option is (c) Cinder

Easiest explanation: Pozzolans are silicate based materials that form cementitious materials.  Fly ash, silica fumes and slag are composed of oxide of silicon.  Cinder is a coal residue.


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