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Which of the following is the second major component of cement?

A. Al2O3

B. CaO

C. SiO2

D. Fe2O3

Correct Answer : B.


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  4. Sea water contains about __________ ppm of bromine.
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  12. Coke used for the production of calcium carbide should have
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  17. Nitrogen is an essential component of
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  19. Pick out the wrong statement.
  20. __________ is obtained as a by-product in the manufacture of sodium hydroxide using brine.
  21. Process conditions in fermentator used for production of penicillin is
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  26. Percentage of uranium in Carnotite ore found in Jadugoda (Jharkhand) is about
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