Multiple Choice
How is boron nitride formed?
A) Boron is heated gently in ammonia.
B) Boron is heated to white heat in ammonia.
C) Boron is heated gently in elemental nitrogen.
D) Boron is heated to white heat in elemental nitrogen.
E) None of the above; boron nitride is naturally occuring.
Correct Answer:

Verified
Correct Answer:
Verified
Q131: Which of the following has the highest
Q132: All the following are units of surface
Q133: Order the following cubic unit cells from
Q134: What mass of zinc metal is required
Q135: Lithium metal reacts with nitrogen gas
Q137: Molecular solids are held together by weak
Q138: What is the density of xenon
Q139: An oxygen tank kept at 20<sup>
Q140: What improves the corrosion resistance of brass?<br>A)
Q141: A cubic close-packed structure has<br>A) A coordination