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Which of the following should be added to the plaster of Paris in order to increase its setting time?

Which of the following should be added to the plaster of Paris in order to increase its setting time? Correct Answer Citric acid

To increase the setting time of the plaster of Paris, suitable retarders are added in it. Citric acid, clay, gum, glue, starch, etc. are all examples of such retarders.

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