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

A. Al2O3

B. CaO

C. SiO2

D. Fe2O3

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
  1. __________ is used as a catalyst in fat splitting.
  2. Na2CO3 is called
  3. Vulcanisation of rubber
  4. Sea water contains about __________ ppm of bromine.
  5. Glass is
  6. Function of thinner in a paint is to
  7. Which of the following is an additional step in the manufacture of paper from bagasse as compared to…
  8. Thermoplastic materials
  9. Builders are added in soap to act as
  10. Hydrazine is largely used
  11. Average sulphur content in Indian pyrites is about __________ percent.
  12. Coke used for the production of calcium carbide should have
  13. Paper pulp produced by Kraft/sulphate process is
  14. Gelatine which is a nitrogenous organic protein is obtained by the hydrolysis of
  15. Low purity oxygen is used for
  16. Which of the following coals has the highest calorific value?
  17. Nitrogen is an essential component of
  18. The most popular and common detergent i.e., alkyl benzene sulfonate (ABS) is a/an __________ detergent.
  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
  22. In contact process, SO3 is absorbed in 97% H2SO4 and not in water, because
  23. Cation exchanger is regenerated usually with
  24. Addition of calcium oxide to water produces
  25. Starting material for the production of styrene butadiene rubber (SBR) is
  26. Percentage of uranium in Carnotite ore found in Jadugoda (Jharkhand) is about
  27. Fluorescent dyes are added in detergents to
  28. Direct conversion of chemical energy into electrical energy is done in a
  29. Carboxymethyl cellulose (CMC) is added in detergents to
  30. Bromine content in sea water may be around __________ ppm.