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

Related Mcqs:

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

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

2. Bleaching powder (chemically known as calcium chloro hypochlorite) is commercially produced by the action of chlorine on ____________________?

   A. Slaked lime
   B. Soda lime
   C. Calcium perchlorate
   D. None of these

3. Sand and ______________ is fused at 1300°C, to produce sodium silicate ?

   A. Limestone
   B. Soda ash
   C. Coke
   D. Sodium sulphate

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

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

5. Metallic soap (e.g. aluminium or calcium salts of fatty acids) can be used_______________________?

   A. As a lubricant
   B. As a rust preventive
   C. In hard water for cleaning of cloth
   D. As a foam depressant in distillation column

6. Zeolite removes both temporary as well as permanent hardness of water by precipitating calcium and magnesium present in water as insoluble zeolites. Used zeolite is regenerated by flushing with the solution of_____________________?

   A. Calcium sulphate
   B. Sodium chloride
   C. Sodium sulphate
   D. Magnesium chloride

7. Coke used for the production of calcium carbide should have____________________?

   A. Low ash content
   B. Low ignition temperature
   C. High electrical resistivity
   D. All A , B. and C.

8. The temperature in the calcium carbide furnace is _______________ °C ?

   A. 200-300
   B. 700-850
   C. 2000-2200
   D. 4000-4500

9. The product obtained on mixing calcium oxide with water is called __________________?

   A. Quicklime
   B. Slaked lime
   C. Milk of lime
   D. None of these

10. Permanent hardness of water is due to the presence of calcium & magnesium __________________?

    A. Bi-carbonates
    B. Sulphates & chlorides
    C. Carbonate
    D. None of these