_______________ is the hardest oxide and is hence used where high wear resistance at high temperature is required?

Related Mcqs:

Boiling point of water gets lowered at high altitudes (e.g., hills), because ___________________?

A. Temperature is low B. Atmospheric pressure is low C. Atmospheric pressure is high D. None of these...

Minimum number of members required to form a Public Limited Joint Stock Com-pany is___________________?

A. 7 B. 10 C. 12 D. 17...

The noble metals________________?

A. Are exemplified by Na, K and Li B. Do not resist corrosion very strongly C. Are the lowermost in the electro-chemical series of metals D. None of these...

A cylindrical rod subjected to a tensile strain within the elastic limit undergoes a volume change. If the volume strain is equal to half the tensile strain, then the Poisson’s ratio of the rod is___________________?

A. 0 B. 0.33 C. 0.44 D. 0.25...

Sudden fall of atmospheric pressure by a large amount is an indication of the_____________________?

A. Rain B. Cold wave C. Storm D. Fair weather...