A. Proteins
B. Carbohydrates
C. Vitamins
D. Fats
Related Mcqs:
- Matte smelting is used in the extraction of_____________________?
A. Lead
B. Zinc
C. Aluminium
D. Copper - Carbide tipped cutting tools are manufactured by powder metallurgy techniques and have a composition of_____________________?
A. 90% tungsten carbide and 10% cobalt
B. 70% aluminium oxide & 30% silica
C. 30% nickel, 15% chromium & 55% tungsten
D. 65% tungsten & 35% zirconium - Titanium is added to molten aluminium alloys before casting for the purpose of_____________________?
A. Grain refinement
B. Increasing corrosion resistance
C. Reducing porosity
D. Improving fluidity - Which of the following is not used as a bearing material ?
A. Copper-lead alloys
B. Babbitts
C. Bronzes
D. Cermets - Dowtherm is a____________________?
A. High temperature heating medium (a petroleum product)
B. Product of coal tar distillation
C. Very heat sensitive material
D. None of these - Increase in the entropy of a system represents the_____________________?
A. Degradation of energy
B. Decrease in system pressure
C. Increase in the availability of energy
D. Increase in the temperature - Which of the following metals reacts violently with water ?
A. Mercury
B. Sodium
C. Calcium
D. Magnesium - Corrosion is____________________?
A. A physical phenomenon
B. A chemical phenomenon
C. Same as erosion
D. An uncontrollable phenomenon - To improve the machinability of steel, it is generally subjected to _____________________?
A. Spheroidising
B. Tempering
C. Normalising
D. Annealing - Which of the following is not a charge material for cupola ?
A. Limestone
B. Iron scrap
C. Iron ore
D. Pig iron
