Main constituents of Portland cement are calcium aluminate and__________________?

Related Mcqs:

1. Finely ground calcium aluminate & silicate is a/an ____________________?

   A. Cermet
   B. Cement
   C. Abrasive
   D. Explosive

2. Portland cement consists mainly of__________________?

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

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

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

4. 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

5. Main constituents of cotton fiber is__________________?

   A. Lignin
   B. Cellulose
   C. Starch
   D. Gelatine

6. Main constituents of natural rubber is____________________?

   A. Polystyrene
   B. Polyisoprene
   C. Polybutadiene
   D. Polychlorophrene

7. Main product in calcium carbide-water reaction is___________________?

   A. Ca(OH)2
   B. C2H2
   C. CO2
   D. CaCO3

8. CO & H2 are the constituents of___________________?

   A. Producer gas
   B. Water gas
   C. Coke oven gas
   D. All A., B. and C.

9. The major constituents of glass are____________________?

   A. Lime, clay and soda ash
   B. Sand, lime and soda ash
   C. Silica, alumina and clay
   D. Silica, alumina and soda ash

10. Commercial production of calcium carbide requires limestone and __________________ as raw materials?

    A. Coke
    B. Sand
    C. Soda ash
    D. Fuel oil