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Why is gypsum added to cement?...

Why is gypsum added to cement?

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Gypsum is added to cement to slow down the process of setting of the cement and to get sufficiently hardened cement.
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(A): 2-3% Gypsum by weight is mixed with cement (R) : Gypsum increases the rate of setting of cement

VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-THE S-BLOCK ELEMENTS -VERY SHORT ANSWER QUESTIONS
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  10. Write the average composition of Portland cement.

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  11. Why is gypsum added to cement?

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  12. Why are alkali metals not found in the free state in nature?

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  13. Potassium carbonate cannot be prepared by Solvey process. Why?

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  14. Describe the important uses of caustic soda.

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  15. Describe the important uses of sodium carbonate.

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  16. Describe the important uses of quick lime.

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  17. Draw the structure of (i) BeCl(2) (vapour) and (ii) BeCl(2) (solid).

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  18. Describe the importance of Plaster of Paris.

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