In a unit crystal 111 represents a a point in it b a

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12- In a unit crystal, [111] represents(a)a point in it (b)a direction in it (c)a plane in it
13- Atomic Packing Factor is
14- The maximum APF is exhibited by
15- A material is isotropic if it:
16- The maximum value of APF is (a)0.68(b) 0.86(c) 1(d)0.74
17- The anions in ceramics are usually ---------------- than cations
18- The ceramics ions are governed by two parameters
19- Stacking sequence of planes in FCC structure is
20- Most common polymer materials are (a)Cotton, Nylon, PS, PE, PVC
(b) Cotton, nylon, glass fiber, PE(c)Cotton, Nylon, wood , glass fibre, silk(d) Cotton, nylon, silk, wool, wood
21- Composites are materials containing two or more distinct phases
22- Generally metal are

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