Question #89692
_______________ is the hardest oxide and is hence used where high wear resistance at high temperature is required?
Options:
Answer:
Alumina is the hardest oxide and is hence used where high wear resistance at high temperature is required.
Question Screenshot
Chemical Engineering Related Questions
-
Q1.A beam of uniform strength has:
-
Q2.The temperature at which the magnetic property of iron disappears (i.e., it becomes nonmagnetic) and its electrical conductivity & specific heat also changes, is called the ‘Curie point’, which is ________________ °C ?
-
Q3.Referring to the periodic table of elements, it is found that with increasing atomic number. The atomic size in the same___________________?
-
Q4.With increase in temperature, the electrical conductivity of semiconductors_____________________?
-
Q5.The only suitable method for hardening the low carbon steel is case hardening. Which of the following is a case hardening process ?
-
Q6.Filler material used in welding should have _________________ as compared to the parent metal to be welded ?
-
Q7.Satellites burn off during re-entry to earth’s atmosphere, because of the ____________________?
-
Q8.About _________________ ton of coke is required in a cupola to produce one ton of casting ?
-
Q9.Joining of thin foils is preferred to be done by _____________________?
-
Q10.Laser welding is widely employed in the __________________ industries ?
Test Your Knowledge
Want to practice more questions like this? Take a quiz in this category!
Take a Quiz