A. Calcium
B. Nitrogen
C. Phosphorous
D. Hydrogen
Related Mcqs:
- Hardening of steel is not possible, unless it is heated _________________ critical point ?
A. Above the highest
B. Above the lowest
C. Between the first & second
D. Between the second & third - Which of the following is an acidic constituent of B.F. slag ?
A. SiO2
B. FeO
C. MgO
D. CaO - 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 - The highest stress that a material can withstand for a specified length of time without excessive deformation is called the ____________ strength ?
A. Creep
B. Endurance
C. Fatigue
D. None of these - Which of the following parameters is not responsible for the heat loss from a hot steam carrying bare pipe surface located in a room without fans ?
A. Emissivity of pipe surface
B. Diameter & length of the pipe
C. Temperature of hot pipe surface & that of air in the room
D. None of these - The property of material, by which a given amount of energy is absorbed by it, without plastic deformation, is called__________________?
A. Resilience
B. Toughness
C. Ductility
D. Impact strength - The property of material, by which a given amount of energy is absorbed by it without plastic deformation, is called the________________________?
A. Resilience
B. Toughness
C. Ductility
D. Impact strength - Which one can be directly solidified from gaseous state without entering into liquid state ?
A. Helium
B. Oxygen
C. Carbon dioxide
D. None of these
