A. Alum
B. Limestone
C. Coke
D. Quartz
Related Mcqs:
- Fusion of limestone and ______________ produces high alumina cement?
A. Sand
B. Bauxite
C. Quicklime
D. Calcite - 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 - Raw materials used for producing ________________ cement does not contain iron oxide?
A. Waterproof
B. Slag
C. White
D. Pozzolan - ________________ is the major constituent of the Portland cement?
A. Calcium carbonate
B. Calcium oxide
C. Tricalcium silicate
D. Calcium sulphate - The metallic aluminium is obtained from pure alumina in the presence of fused cryolite by_________________?
A. Electrolysis
B. Electrolytic reduction
C. Electrolytic oxidation
D. None of these - Reaction of ethylene glycol and dimethyl terephthalate (DMT) produces ________________?
A. Nylon-6
B. Dacron
C. Polyester
D. PVC - Resistance to fusion of the refractory under a steady rising temperature condition is called ____________________ ?
A. Spalling
B. Refractoriness
C. Both A. & B.
D. Neither A. nor B. - High temperature carbonisation of coal produces _____________________ ?
A. Inferior coke compared to low temperature carbonisation
B. Less of gases compared to liquid products
C. Larger quantity of tar compared to low temperature carbonisation
D. None of these - 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 - Cement mainly contains_________________?
A. CaO, SiO2, Al2O3
B. MgO, SiO2, K2O
C. Al2O3, MgO, Fe2O3
D. CaO, MgO, K2O
