A.Corundum
B.Diamond
C.Calcite
D.Quartz
E.Fluorite
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- Which of the following is the hardest?
- The white sands of New Mexico are composed chiefly of:
- The sands of Bermuda are composed of:
- Which of the following is the anti-penetration material introduced in the moulding sand?
- Which of the following is the hardest material?
- Which material has the best damping capacity
- In a machining operation on free cutting mild steel the cutting speed is mentioned as 70 m/min. What should be material of cutting tool
- Under which condition a material ordinatily said to be ductile undergoes a fracture similar to that of a brittle material
- Suppose that the transmissivity is zero for a very thick piece of material. If the material is perfectly black where ? = absorptivity and ? = reflectivity
