Electronic Devices and Circuits - Engineering

Q1:

The function off an oxide layer in an IC device is to
  1. mask against diffusion or ion implantation
  2. insulate the surface electrically
  3. increase the melting point of Si
  4. produce a chemically stable protective layer

A 1, 2, 3

B 1, 3, 4

C 2, 3, 4

D 4, 1, 2

ANS:D - 4, 1, 2

No answer description is available.