Portland cement consists mainly of__________________?

Related Mcqs:

1. ________________ is the major constituent of the Portland cement?

   A. Calcium carbonate
   B. Calcium oxide
   C. Tricalcium silicate
   D. Calcium sulphate

2. Main constituents of Portland cement are calcium aluminate and__________________?

   A. Gypsum
   B. Silicates
   C. Sodium silicate
   D. Carbonates

3. The compressive strength of cement should not be less than about 110Kg/cm2 after three days & not less than 170Kg/cm2 after seven days. The fineness of an ordinary cement as determined by turbidimetric method should be about ________________ cm2/gm?

   A. 800
   B. 1600
   C. 4000
   D. 8500

4. Cement mainly contains_________________?

   A. CaO, SiO2, Al2O3
   B. MgO, SiO2, K2O
   C. Al2O3, MgO, Fe2O3
   D. CaO, MgO, K2O

5. Carborundum consists mainly of_________________?

   A. Bauxite
   B. Silicon carbide
   C. Boron carbide
   D. Calcium carbide

6. Producer gas consists mainly of________________________?

   A. CO, CO2 N2, H2
   B. CO, H2
   C. H2, CH4
   D. C2H2, CO2, H2

7. Coke oven gas consists mainly of ____________________?

   A. H2, & CH4
   B. CO, & CO2
   C. H2, & CO
   D. CH4, & CO

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

   A. Al2O3
   B. SiO2
   C. CaO
   D. Fe2O3

9. Fusion of limestone and ______________ produces high alumina cement?

   A. Sand
   B. Bauxite
   C. Quicklime
   D. Calcite

10. Cement setting under water employs a/an _______________ process ?

    A. Hydration
    B. Decomposition
    C. Oxidation
    D. Reduction