Which of the following additives/water proofing agents is added to lower the hydrophilic (moisture loving) characteristic of cement ?

Related Mcqs:

1. Hydrophilic group of a soap or detergent solution is____________________?

   A. Water hating
   B. Soil loving
   C. Water loving
   D. None of these

2. 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

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

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

4. Stereospecific agents are exemplified by________________?

   A. Radiation
   B. Supported metal oxide catalysts
   C. Ziegler catalysts
   D. All A , B. & C

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

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

6. Lime and soda ash are added to water to remove ___________________?

   A. Bicarbonates & sulphates of calcium and magnesium
   B. Undesirable taste and odour
   C. Bacteria
   D. Its corrosiveness

7. Production of one ton of cement requires about _______________ tons of limestone ?

   A. 0.6
   B. 1.2
   C. 2.2
   D. 3.8

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

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

9. Portland cement consists mainly of__________________?

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

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

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