95) which of the following is an amorphous material?

Answer is:

Glass

Engineering Materials MCQ with Answers

96) which of the following is a mesomorphous material?

Answer is:

Mica

97) The unit cells

contain the smallest number of atoms which when taken together have all the properties of the crystals of the particular metal

have the same orientation and their similar faces are parallel

may be defined as the smallest parallelopiped which could be transposed in three co-ordinate directions to build up the space lattice

all of the above

Answer is:

all of the above

Explanation:

1.The unit cells Contain the smallest number of atoms which when taken together have all the properties of the crystals of the particular metal
2. The unit cells Have the same orientation and their similar faces are parallel
3. The unit cells May be defined as the smallest parallelepiped which could be transposed in three coordinate directions to build up the space lattice