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JEE Main20236 Apr 2023Morning ShiftChemistrys Block ElementsActual

The setting time of Cement is increased by adding

Options

  1. AClay
  2. BSilica
  3. CGypsum
  4. DLimestone

Correct answer

C. Gypsum

Step-by-step solution

Cement or Portland cement mainly contains oxides of calcium, silicon, aluminium, and iron. When water is mixed with cement, the oxides get hydrated, and cement sets extremely fast. To control the setting time of cement, gypsum is added to it, which increases the setting time of cement.

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