Question

1) the coordination number of crystal solid is the ?

a) A number of octahedral voids in a unity ceell

b) numbers of particles in a unit cell

c) number of tetrahedral vioids in a unit cell

d) number of nearest neighbors of a particle

2)the process by which a thermosetting polymer becomes a matrix is known is?

a) polymization

b) cross linking

c) gelation

d) cure

89)which statement is not true

a) hardness is the ability of the material to measure the cause of indention

b) hardness is the resientance of a material to local plastic deformation

c)hardness is the surface property

d) hardness is a measure of how much material resists change in shape

Answer 1

îordination number of crystal alution to solid is the - (d) Number neighbours particle af nearest of Salution 828 The process by which a theronosettin setting palymer a matrix is (d) care. becomes known as- Salutiam- 3(n) hardness is the ability 4 of indentation This statement is wrong about hardnesy material to measure the cause