<prompt> Which of the following is true about non-zinc alloys?It is more plasticIt is more workableIt is less susceptible to oxidationUseful in cases where its clinically impossible to eliminate moisture from the field of operation  <response>: Amalgam not containing zinc or any of its substitutes will tend to be less plastic and less workable and more susceptible to oxidation. Non-zinc alloys should be chosen only in cases where clinically impossible to eliminate moisture from the field of operation.Reference: Marzouk Operative dentistry, pg-111 