A. SiO2
B. FeO
C. MgO
D. CaO
Related Mcqs:
- Which of the following is an undesirable property of slag produced during the Pyrometallurgical method of metal extraction from its ore ?
A. High fusibility & fluidity
B. High thermal conductivity
C. Low density
D. High chemical activity - Volume of blast furnace slag is about _______________ times the volume of hot metal (pig iron) of the same weight ?
A. 1.5
B. 3
C. 5
D. 7 - The function of neutral flux used in the pyrometallurgy of metal extraction is to increase the _____________ of the slag ?
A. Fluidity
B. Basicity
C. Acidity
D. Viscosity - Blast furnace slag is mainly molten_________________?
A. Sand
B. Magnesium silicate
C. Calcium silicate
D. Iron pyrite - Specific gravity of hot metal (pig iron) is ______________ times that of the blast furnace slag ?
A. 2
B. 3
C. 0.8
D. 6 - ________________ is a special constituent of chlorophyll without which photosynthesis is not possible ?
A. Calcium
B. Nitrogen
C. Phosphorous
D. Hydrogen - The main constituent of bones is ______________________?
A. CaF2
B. Ca3(PO4)2
C. CaCO3
D. CaCl2 - Main constituent of bone ash is____________________?
A. Ammonium phosphate
B. Calcium phosphate
C. Animal charcoal
D. Ammonium sulphate - _______________ is a non volatile film forming constituent of a paint ?
A. Thinner
B. Dryer
C. Drying oil
D. None of these - Which of the following varies as the square root of oil pressure during atomisation of fuel oil through a pressure jet burner ?
A. Output & fineness
B. Velocity
C. Both A. & B.
D. None of these
