A. Al2O3
B. SiO2
C. CaO
D. Fe2O3
Related Mcqs:
- 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 - ________________ is the major constituent of the Portland cement?
A. Calcium carbonate
B. Calcium oxide
C. Tricalcium silicate
D. Calcium sulphate - Major component of flint glass is_____________________?
A. Lead oxide
B. Silica
C. Alumina
D. Soda - Which of the following additives/water proofing agents is added to lower the hydrophilic (moisture loving) characteristic of cement ?
A. Xanthates
B. Stearic acid
C. Calcium & aluminium stearate
D. Formic acid - Production of one ton of cement requires about _______________ tons of limestone ?
A. 0.6
B. 1.2
C. 2.2
D. 3.8 - Shrinkage volume in cement setting does not depend upon the _____________________?
A. Sand to cement ratio
B. Water to cement ratio
C. Ambient temperature fluctuation
D. Drying period - Fusion of bauxite and ________________ produces high alumina cement?
A. Alum
B. Limestone
C. Coke
D. Quartz - Raw materials used for producing ________________ cement does not contain iron oxide?
A. Waterproof
B. Slag
C. White
D. Pozzolan - Cement mainly contains_________________?
A. CaO, SiO2, Al2O3
B. MgO, SiO2, K2O
C. Al2O3, MgO, Fe2O3
D. CaO, MgO, K2O - The function of gypsum addition during cement making is to_________________?
A. Increase the density of cement
B. Decrease the cement setting rate
C. Both A. and B.
D. Neither A. nor B.
