Statement-I: 8-10% Gypsum is added to cement to make its equeous paste set quickly.Statement-II: The ratio of CaO : (SiO2 + Al2O3 + Fe2O3) in a good quality cement is 1:2
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a
Both statement-I and statement-II are correct
b
Statement-I is correct and statement-II is incorrect
c
Statement-I is incorrect and statement-II is correct
d
Both statement-I and statement-II are incorrect
answer is D.
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Detailed Solution
2-3% Gypsum is added to cement to make its aqueous paste take a sufficient long time for setting (settling is delayed) andratio is 2:1